6.7. BGP Commands

6.7.1. address-family

Command Purpose

Use this command to enter the IPv4, VPNv4 address-family command mode.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

address-family ipv4 ( unicast | vrf NAME | )

address-family vpnv4 ( unicast )

Parameter	Parameter Description	Parameter Value
vpnv4	Configures sessions for VPN-IPv4 prefixes. This parameter takes an IPv4 style address: A.B.C.D.	-
unicast	Specifies unicast prefixes	-
vrf	VPN routing/forwarding instance	-
NAME	VPN Routing/Forwarding instance name	Up to 15 characters

Command Mode

Router Configuration

Default

None

Usage

Use the address family command to enter the address family mode allowing configuration of address-family specific parameters.

To leave the address family mode and return to the Configure mode use the exit-address-family command.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)#address-family ipv4

6.7.2. aggregate-address

Command Purpose

Use this command to configure BGP aggregate entries.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

( no ) aggregate-address IP_PREFIX { summary-only | as-set }

Parameter	Parameter Description	Parameter Value
IP_PREFIX	A.B.C.D/M Specifies the aggregate prefix	IPv4 Address and mask length in A.B.C.D/M format
summary-only	Filters more specific routes from updates.	-
as-set	Generates AS set path information	-

Command Mode

Router Configuration

Default

Disabled

Usage

Aggregates are used to minimize the size of routing tables. Aggregation combines the characteristics of several different routes and advertises a single route.The aggregate-address command creates an aggregate entry in the BGP routing table if any more-specific BGP routes are available in the specified range. Using the summary-only parameter advertises the prefix only, suppressing the more-specific routes to all neighbors.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# aggregate-address 10.0.0.0/8 as-set summary-only

Related Commands

N/A

6.7.3. bgp always-compare-med

Command Purpose

Use this command to compare the Multi Exit Discriminator (MED) for paths from neighbors in different autonomous systems.

Use the no parameter with this command to disallow the comparison.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

( no ) bgp always-compare-med

Command Mode

Router Configuration

Default

Disabled

Usage

Multi Exit Discriminator (MED) is used in best path selection by BGP. MED is compared after BGP attributes weight, local preference, AS-path and origin have been compared and are equal.

MED comparison is done only among paths from the same autonomous system (AS). Use bgp always-comparemed command to allow comparison of MEDs from different ASs. The MED parameter is used to select the best path. A path with lower MED is preferred.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp always-compare-med

Related Commands

bgp bestpath med

bgp bestpath as-path ignore

6.7.4. bgp bestpath as-path ignore

Command Purpose

Use this command to prevent the router from considering as-path as a factor in the algorithm for choosing a route.

Use the no parameter with this command to allow the router to consider as-path in choosing a route.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

( no ) bgp bestpath as-path ignore

Command Mode

Router Configuration

Default

Disabled

Usage

None

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp bestpath as-path ignore

Related Commands

bgp always-compare-med, bgp bestpath med, bgp bestpath compare-routerid

6.7.5. bgp bestpath compare-confed-aspath

Command Purpose

Use this command to allow comparing of the confederation AS path length.

Use the no parameter with this command to revert the selection and ignore AS confederation path length in the BGP best path selection.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

( no ) bgp bestpath compare-confed-aspath

Command Mode

Router Configuration

Default

BGP receives routes with identical eBGP paths from eBGP peers and selects the first route received as the best path.

Usage

This command specifies that the AS confederation path length must be used, when available, in the BGP best path decision process. It is effective only when bgp bestpath as-path ignore command has not been specified.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp bestpath compare-confed-aspath

Related Commands

bgp bestpath as-path ignore

6.7.6. bgp bestpath compare-routerid

Command Purpose

Use this command to compare router-id for identical eBGP paths.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

( no ) bgp bestpath compare-routerid

Command Mode

Router Configuration

Default

BGP receives routes with identical eBGP paths from eBGP peers and selects the first route received as the best path.

Usage

When comparing similar routes from peers the BGP router does not consider router ID of the routes. By default, it selects the first received route. Use this command to include router ID in the selection process; similar routes are compared and the route with lowest router ID is selected. The router-id is the highest IP address on the router, with preference given to loopback addresses. Router-id can be manually set by using the bgp router-id command.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp bestpath compare-routerid

Related Commands

show ip bgp

show ip bgp neighbors

6.7.7. bgp bestpath med

Command Purpose

Use this command to specify Multi Exit Discriminator (MED) attribute comparison.

Use the no parameter with this command to prevent BGP from considering the MED attribute in comparing paths.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp bestpath med confed [ missing-as-worst ]

bgp bestpath med missing-as-worst [ confed ]

no bgp bestpath med confed [ missing-as-worst ]

no bgp bestpath med missing-as-worst [ confed ]

Parameter	Parameter Description	Parameter Value
confed	Compares MED among confederation paths	-
missing-as-worst	Treats missing MED as the least preferred one	-

Command Mode

Router Configuration

Default

MED value is zero.

Usage

Use this command to specify two MED attributes–confed and missing-as-worst. The confed attribute enables MED comparison among paths learned from confederation peers. The MEDs are compared only if there is no external autonomous system (an AS not within the confederation) in the path. If there is an external autonomous system in the path, the MED comparison is not made.

The missing-as-worst attribute to consider a missing MED attribute in a path as having a value of infinity, making the path without a MED value the least desirable path. If missing-as-worst is disabled, the missing MED is assigned the value of 0, making the path with the missing MED attribute the best path.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp bestpath med missing-as-worst

Related Commands

bgp-always-compare-med, bgp bestpath as-path ignore, bgp deterministic-med

6.7.8. bgp client-to-client reflection

Command Purpose

Use this command to restore route reflection from a BGP route reflector to clients.

Use the no parameter with this command to turn off client-to-client reflection.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp client-to-client reflection

no bgp client-to-client reflection

Parameter	Parameter Description	Parameter Value
reflection	Allows reflection of routes	-

Command Mode

Router Configuration

Default

When a router is configured as a route reflector, client-to-client reflection is enabled by default.

Usage

The bgp client-to-client reflection command is used to configure routers as route reflectors. Route reflectors are used when all Interior Border Gateway Protocol (iBGP) speakers are not fully meshed. If the clients are fully meshed the route reflector is not required, use no bgp client-to-client reflection command to disable the client-to-client route reflection.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# no bgp client-to-client reflection

Related Commands

bgp cluster-id

neighbor route-reflector-client

show ip bgp

6.7.9. bgp cluster-id

Command Purpose

Use this command to configure the cluster ID if the BGP cluster has more than one route reflector.

Use the no parameter with this command to remove the cluster ID.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp cluster-id CLUSTERID

no bgp cluster-id

Parameter	Parameter Description	Parameter Value
CLUSTERID	Specifies the cluster ID of this router acting as a routereflector, either as IP address or as a maximum of 4 bytes.	IPv4 Address in A.B.C.D format or number in range 1-4294967295
A.B.C.D	A.B.C.D Route Reflector Cluster-id in IP address format	IPv4 Address
1-4294967295	Route Reflector cluster-id as a 32 bit quantity	1-4294967295

Command Mode

Router Configuration

Default

N/A

Usage

A cluster includes route reflectors and its clients. Usually, each cluster is identified by the router ID of its single route reflector but to increase redundancy sometimes a cluster may have more than one route reflector. All router reflectors in such a cluster are then identified by a cluster ID. The bgp cluster-id command is used to configure the 4 byte cluster ID for clusters with more than one route reflectors.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp cluster-id 1.1.1.1

Related Commands

bgp client-to-client reflection, neighbor route-reflector-client, show ip bgp

6.7.10. bgp confederation identifier

Command Purpose

Use this command to specify a Bgp confederation identifier.

Use the no parameter with this command to remove the Bgp confederation identifier.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp confederation identifier ID

no bgp confederation identifier

Parameter	Parameter Description	Parameter Value
ID	Set routing domain confederation AS number	1-65535

Command Mode

Router Configuration

Default

N/A

Usage

N/A

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp confederation identifier 1

Related Commands

bgp confederation peer

6.7.11. bgp confederation peers

Command Purpose

Use this command to configure the Autonomous Systems (AS) that belong to the confederation.

Use the no parameter with this command to remove an autonomous system from the confederation.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp confederation peers .ASN

no bgp confederation peers ( .ASN | )

Parameter	Parameter Description	Parameter Value
ASN	AS numbers of eBGP peers that are under same confederation but in a different sub-AS	1-65535

Command Mode

Router Configuration

Default

N/A

Usage

A confederation allows an AS to be divided into several ASs. The AS is given a confederation identifier. External routers view only the whole confederation as one AS. Each AS is fully meshed within itself and is visible internally to the confederation. Use the bgp confederation peer command to define the list of confederation peers.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp confederation peers 1234 21345

Related Commands

bgp confederation identifier

6.7.12. bgp dampening

Command Purpose

Use this command to set bgp dampening parameters.

Use the no parameter with this command to unset the bgp dampening parameters.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp dampening REACHTIME

bgp dampening REACHTIME REUSE

bgp dampening REACHTIME REUSE SUPPRESS MAXSUPPRESS ( UNREACHTIME | )

bgp dampening route-map ROUTEMAP

no bgp dampening REACHTIME

no bgp dampening REACHTIME REUSE

no bgp dampening REACHTIME REUSE SUPPRESS MAXSUPPRESS ( UNREACHTIME | )

no bgp dampening route-map ( ROUTEMAP | )

Parameter	Parameter Description	Parameter Value
REACHTIME	Specifies the reachability half-life time in minutes. The time for the penalty to decrease to one-half of its current value. The default is 15 minutes.	1-45
REUSE	Specifies the reuse limit value. When the penalty for a suppressed route decays below the reuse value, the routes become unsuppressed. The default reuse limit is 750 SUPPRESS <1-20000> Specifies the suppress limit value. When the penalty for a route exceeds the suppress value, the route is suppressed. The default suppress limit is 2000.	1-20000
SUPPRESS	Specifies suppress-time.A route dampening more than this value will be suppressd. The default value is 2000.	1-20000
MAXSUPPRESS	Specifies the max-suppress-time. Maximum time that a dampened route is suppressed. The default max-suppress value is 4 times the half-life time (60 minutes).	1-255
UNREACHTIME	Specifies the un-reachability half-life time for penalty, in minutes.	1-45
ROUTEMAP	route-map WORD Route-map to specify criteria for dampening.	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Route dampening minimizes the instability caused by route flapping. A penalty is added for every flap in a flapping route. As soon as the total penalty reaches the suppress limit the advertisement of the route is suppressed. This penalty is decayed according to the configured half time value. Once the penalty is lower than the reuse limit, the route advertisement is un-suppressed.

The dampening information is purged from the router once the penalty becomes less than half of the reuse limit.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp dampening 20 800 2500 80 25

Related Commands

N/A

6.7.13. bgp default ipv4-unicast

Command Purpose

Use this command to configure BGP defaults and activate ipv4-unicast for a peer by default. This affects the BGP Global Config.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp default ipv4-unicast

no bgp default ipv4-unicast

Command Mode

Router Configuration

Default

The bgp default ipv4 unicast is the default behavior.

Usage

The no bgp default ipv4-unicast command is used to disable the default behavior of the BGP routing process of exchanging IPv4 addressing information with BGP neighbor routers.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp default ipv4-unicast

Related Commands

N/A

6.7.14. bgp default local-preference

Command Purpose

Use this command to change the default local preference value.

Use the no parameter with this command to revert to the default setting.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp default local-preference PREF_VALUE

no default local-preference

Parameter	Parameter Description	Parameter Value
PREF_VALUE	Configure default local preference value.The default local preference value is 100.	0-4294967295

Command Mode

Router Configuration

Default

The default local preference value is 100.

Usage

Local preference indicates the preferred path when there are multiple paths to the same destination. The path having a higher preference is preferred. Use bgp default local-preference command to define preference of a particular path. The preference is sent to all routers and access servers in the local autonomous system.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp default local-preference 2345555

Related Commands

N/A

6.7.15. bgp deterministic-med

Command Purpose

Use this command to compare the Multi Exit Discriminator (MED) variable when choosing among routes advertised by different peers in the same autonomous system.

Use the no parameter with this command to disallow this setting.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp deterministic-med

no bgp deterministic-med

Command Mode

Router Configuration

Default

Disabled

Usage

“Multi Exit Discriminator (MED) is used in best path selection by BGP. MED is compared after BGP attributes weight, local preference, AS-path and origin have been compared and are equal. Enable bgp deterministic med command on all routers in the local AS, for a correct comparison result. After enabling this command, all paths for the same prefix are grouped together and arranged according to their MED value.

Based on this comparison, the best path is then chosen.

This command compares MED variable when choosing routes advertised by different peers in the same AS, to compare MED, when choosing routes from neighbors in different ASs use the bgp always-compare-med command.”

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp deterministic-med

Related Commands

show ip bgp, show ip bgp neighbors

6.7.16. bgp enforce-first-as

Command Purpose

Use this command to specifies that any updates received from an external neighbor that do not have the neighbor’s configured Autonomous System (AS) at the beginning of the AS_PATH in the received update must be denied.

Use the no parameter with this command to disable this feature.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp enforce-first-as

no bgp enforce-first-as

Command Mode

Router Configuration

Default

Disabled

Usage

Enabling this feature adds to the security of the BGP network by not allowing traffic from unauthorized systems.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp enforce-first-as

Related Commands

N/A

6.7.17. bgp fast-external-failover

Command Purpose

Use this command to reset a BGP session immediately, if the interface used for BGP connection goes down.

Use the no parameter with this command to disable this feature.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp fast-external-failover

no bgp fast-external-failover

Command Mode

Router Configuration

Default

Enabled

Usage

None

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp fast-external-failover

Related Commands

N/A

6.7.18. bgp log-neighbor-changes

Command Purpose

Use this command to enable logging of status change messages without turning on debug BGP commands.

Use the no parameter with this command to disable this feature.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp log-neighbor-changes

no bgp log-neighbor-changes

Command Mode

Router Configuration

Default

Disabled

Usage

System implementation provides other kinds of logging services for neighbor status, for example, debug bgp fsm, debug bgp events, etc. However, these commands create a significant hit in the logging performance.

The bgp log-neighbor-changes command, logs the following events:

(1)BGP Notification Received

(2)Erroneous BGP Update Received

(3)User reset request

Peer time-out

(5)Peer Closing down the session

Interface flap
Router ID changed
Neighbor deleted
Member added to peer group
Administrative shutdown
Remote AS changed
RR client configuration modification

(13)Soft reconfiguration modification

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp log-neighbor-changes

Related Commands

N/A

6.7.19. bgp router-id

Command Purpose

Use this command to configure the router identifier.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp router-id ROUTERID

no bgp router-id ( ROUTERID | )

Parameter	Parameter Description	Parameter Value
ROUTERID	A.B.C.D Manually configured router ID.	IPv4 Address in A.B.C.D format

Command Mode

Router Configuration

Address Family Configuration

Default

In case the loopback interface is configured the router-id is set to the IP address of a loopback interface. If not, the highest IP address is the router-id.

Usage

Use bgp router-id command to manually configure a fixed router ID as a BGP router identifier.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp router-id 1.1.2.3

Related Commands

N/A

6.7.20. bgp scan-time

Command Purpose

Use this command to set the interval for BGP route next-hop scanning.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

bgp scan-time TIME

no bgp scan-time

Parameter	Parameter Description	Parameter Value
TIME	Scanning interval in seconds. The default scanning interval is 60 seconds.	0-60

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to configure scanning intervals of BGP routers. This interval is the period after which router checks the validity of the routes in its database.

To disable BGP scanning, set the scan time interval to 0 seconds.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# bgp scan-time 10

Related Commands

N/A

6.7.21. clear ip bgp *

Command Purpose

Use this command to reset a BGP connection for all peers.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp * ( IN | out | SOFT | )

clear ip bgp * ipv4 PREFIX ROUTES

clear ip bgp * vpnv4 unicast ROUTES

clear ip bgp * vrf NAME ROUTES

Parameter	Parameter Description	Parameter Value
*	clears all bgp peers	-
ipv4	clears all IPv4 address family peers	-
vpnv4	clears all vpnv4 address family peers	-
ROUTES	(INSOFT)	-
IN	in (prefix-filter\|)	-
in	Indicates that incoming advertised routes will be cleared	-
prefix-filter	Pushes out prefix-list ORF and does inbound soft reconfiguration	-
out	Indicates that outgoing advertised routes will be cleared.	-
SOFT	soft (in) Indicates that both incoming and outgoing routes will be cleared	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-
vrf	VPN routing/forwarding instance	-
NAME	VPN Routing/Forwarding instance name	Up to 15 characters

Command Mode

Privileged EXEC

Default

N/A

Usage

There are two kinds BGP reset, hard reset will clear BGP peers and establish again. Soft reset only refresh routing table.

Examples

Switch# clear ip bgp *
Switch# clear ip bgp * ipv4 unicast in prefix-filter
Switch# clear ip bgp * vpnv4 unicast in

Related Commands

N/A

6.7.22. clear ip bgp A.B.C.D

Command Purpose

Use this command to reset a IPv4 BGP connection for a specific IP address.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp A.B.C.D ( in | out | SOFT )

clear ip bgp A.B.C.D ipv4 PREFIX ROUTES

clear ip bgp A.B.C.D vpnv4 unicast ROUTES

clear ip bgp A.B.C.D vrf NAME ROUTES

Parameter	Parameter Description	Parameter Value
A.B.C.D	Specifies the IPv4 address of the BGP route to be cleared	IPv4 Address in A.B.C.D format
ipv4	clears all IPv4 address family peers	-
vpnv4	clears all VPNv4 address family peers	-
ROUTES	(INSOFT)	-
IN	in prefix-filter	-
in	Indicates that incoming advertised routes will be cleared	-
prefix-filter	Pushes out prefix-list ORF and does inbound soft reconfiguration	-
out	Indicates that outgoing advertised routes will be cleared.	-
SOFT	soft (in) Indicates that both incoming and outgoing routes will be cleared	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-
vrf	VPN routing/forwarding instance	-
NAME	VPN Routing/Forwarding instance name	Up to 15 characters

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# clear ip bgp 10.10.0.12 soft
Switch# clear ip bgp 10.10.0.10 vpnv4 unicast out
Switch# clear ip bgp 11.11.11.11 ipv4 multicast in prefix-filter

Related Commands

N/A

6.7.23. clear ip bgp dampening

Command Purpose

Use this command to reset all dampened BGP routes under the specified address family.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp dampening ( A.B.C.D | A.B.C.D/M | )

clear ip bgp ipv4 PREFIX dampening ( A.B.C.D | A.B.C.D/M | )

Parameter	Parameter Description	Parameter Value
A.B.C.D	Specifies the IPv4 address for which Bgp dampening is to be cleared.	IPv4 Address in A.B.C.D format
A.B.C.D/M	Specifies the IPv4 address with mask for which Bgp dampening is to be cleared.	IPv4 Address and mask length in A.B.C.D/M format
ipv4	clears all IPv4 address family peers	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# clear ip bgp dampening 10.10.0.121
Switch# clear ip bgp ipv4 unicast dampening

Related Commands

N/A

6.7.24. clear ip bgp flap-statistics

Command Purpose

Use this command to clear the flap count and history duration for all the prefixes under the specified address family.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp flap-statistics ( A.B.C.D | A.B.C.D/M | )

clear ip bgp ipv4 PREFIX flap-statistics ( A.B.C.D | A.B.C.D/M | )

Parameter	Parameter Description	Parameter Value
A.B.C.D	Specifies the IPv4 address for which Bgp dampening is to be cleared.	IPv4 Address in A.B.C.D format
A.B.C.D/M	Specifies the IPv4 address with mask for which Bgp dampening is to be cleared.	IPv4 Address and mask length in A.B.C.D/M format
ipv4	clears all IPv4 address family peers	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# clear ip bgp flap-statistics 10.10.0.121
Switch# clear ip bgp ipv4 unicast flap-statistics

Related Commands

N/A

6.7.25. clear ip bgp ASN

Command Purpose

Use this command to reset a BGP connection for all peers in a specified Autonomous System.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp ASN ( IN | out | SOFT | )

clear ip bgp ASN ipv4 PREFIX ROUTES

clear ip bgp ASN vpnv4 unicast ROUTES

Parameter	Parameter Description	Parameter Value
ASN	Specifies the AS Number for which all routes will be cleared	1-65535
ipv4	clears all IPv4 address family peers	-
vpnv4	clears all VPNv4 address family peers	-
ROUTES	(INSOFT)	-
IN	in prefix-filter	-
in	Indicates that incoming advertised routes will be cleared	-
out	Indicates that outgoing advertised routes will be cleared.	-
prefix-filter	Pushes out prefix-list ORF and does inbound soft reconfiguration	-
SOFT	soft (in) Indicates that both incoming and outgoing routes will be cleared	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# clear ip bgp 100
Switch# clear ip bgp 200 ipv4 unicast in prefix-filter
Switch# clear ip bgp 500 vpnv4 unicast in

Related Commands

N/A

6.7.26. clear ip bgp external

Command Purpose

Use this command to reset a BGP connection for all external peers.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp external ( In | out | SOFT | )

clear ip bgp external ipv4 PREFIX ROUTES

Parameter	Parameter Description	Parameter Value
external	Clears all external peers	-
ROUTES	(INSOFT)	-
IN	in prefix-filter	-
in	Indicates that incoming advertised routes will be cleared	-
out	Indicates that outgoing advertised routes will be cleared.	-
SOFT	soft (in) Indicates that both incoming and outgoing routes will be cleared	-
ipv4	clears all IPv4 address family peers	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# clear ip bgp external out
Switch# clear ip bgp external ipv4 unicast in prefix-filter

Related Commands

N/A

6.7.27. clear ip bgp peer-group

Command Purpose

Use this command to reset a BGP connection for all members of a peer group.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp peer-group WORD ( In | out | SOFT | )

clear ip bgp peer-group WORD ipv4 PREFIX ROUTES

Parameter	Parameter Description	Parameter Value
peer-group	Clears all members of a peer group	-
WORD	Specifies the name of the peer group for which all members will be cleared.	Up to 20 characters
ipv4	clears all IPv4 address family peers	-
ROUTES	(INSOFT)	-
prefix-filter	Pushes out prefix-list ORF and does inbound soft reconfiguration	-
IN	in prefix-filter	-
in	Indicates that incoming advertised routes will be cleared	-
out	Indicates that outgoing advertised routes will be cleared.	-
SOFT	soft (in) Indicates that both incoming and outgoing routes will be cleared	-
PREFIX	(unicast\|multicast)	-
unicast	address family modifier	-
multicast	address family modifier	-

Command Mode

Privileged EXEC

Default

N/A

Usage

None

Examples

Switch# clear ip bgp peer-group Peer1 out
Switch# clear ip bgp peer-group mypeer ipv4 unicast in prefix-filter

Related Commands

N/A

6.7.28. clear ip bgp vrf

Command Purpose

Use this command to reset the specified VPN Routing /Forwarding Instance for BGP connections.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

clear ip bgp ( A.B.C.D ) | * ) vrf WORD ( out | in | SOFT )

Parameter	Parameter Description	Parameter Value
WORD	Specifies the name of the VRF	Up to 15 characters
A.B.C.D	Specifies the IPv4 address of the BGP route to be cleared	IPv4 Address in A.B.C.D format
*	Clears all peers	-
out	Performs soft reconfiguration out	-
SOFT	soft (in) Indicates that both incoming and outgoing routes will be cleared	-
in	Performs soft reconfiguration in	-

Command Mode

Privileged EXEC

Default

N/A

Usage

If the neighbor address is specified with this command it clears the specified connection. If no address is specified this command clears all the BGP routes.

Examples

Switch# clear ip bgp 3.3.3.3 vrf VRF1 soft in

Related Commands

N/A

6.7.29. debug bgp

Command Purpose

Use this command to specify all debugging options for BGP. Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

Parameter	Parameter Description	Parameter Value
all	Used with the no form exclusively; turns off all debugging for BGP	-
dampening	Specifies debugging for Bgp dampening.	-
events	Specifies debugging for BGP events.	-
filters	Specifies debugging for BGP filters.	-
fsm	Specifies debugging for BGP Finite State Machine (FSM).	-
mpls	Specifies debuggin for BGP Multiprotocol Label Switching.	-
keepalives	Specifies debugging for BGP keepalives.	-
updates	updates Specifies debugging for BGP updates.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

This command without any parameters turns on normal bgp debug information.

Examples

Switch# debug bgp
Switch# debug bgp events

Related Commands

N/A

6.7.30. distance

Command Purpose

Use this command to define an administrative distance.

Use the no parameter with this command to remove an administrative distance.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

distance ADMINDISTANCE IP_ADDR/IP_MASK_LEN

no distance ADMINDISTANCE IP_ADDR/IP_MASK_LEN

Parameter	Parameter Description	Parameter Value
ADMINDISTANCE	Specifies the administrative distance.	1-255
IP_ADDR	the IP source prefix	IPv4 Address
IP_MASK_LEN	the IP source prefix mask length	1-32

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to set the administrative distance for BGP. This distance is a rating of trustworthiness of a router.

The higher the distance the lower the trust rating.

The administrative distance can be set for external, internal and local routes. External paths are routes learned from a neighbor out of the AS. The internal routes are routes learned from another router within the same AS. Local routes are for the router that is being redistributed from another process.

If the administrative distance is changed, it could create inconsistency in the routing table and obstruct routing.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# distance 34 10.10.0.0/24 mylist
Switch(config-router)# distance bgp 34 23 15

Related Commands

N/A

6.7.31. exit-address-family

Command Purpose

Use this command to exit the address family mode.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

exit-address-family

Command Mode

Address Family Configuration

Default

N/A

Usage

N/A

Examples

The following example shows the use of exit-address-family command and the change in the prompt after using this command:

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# address-family ipv4 unicast
Switch(config-router-af)# exit-address-family
Switch(config-router)#

Related Commands

address-family

6.7.32. ip as-path access-list

Command Purpose

Use this command to define a BGP Autonomous System (AS) path access list.

Use the no parameter with this command to disable use of the access list.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

ip as-path access-list LISTNAME ( deny | permit ) LINE

no ip as-path access-list LISTNAME ( deny | permit ) LINE

Parameter	Parameter Description	Parameter Value
LISTNAME	Specifies the name of the access list.	Up to 40 characters, the first character must be among [a-zA-Z0-9]
deny	(Optional) Denies access to matching conditions.	-
permit	(Optional) Permits access to matching conditions.	-
LINE	Specifies a regular expression to match the BGP AS paths.	A regular expression to match the BGP AS paths

Command Mode

Global Config

Default

N/A

Usage

Named community list is a filter based on regular expressions. If the regular expression matches the specified string representing the AS path of the route, then the permit or deny condition applies. Use this command to define the BGP access list globally, use the neighbor router configuration command to apply a specific access list.

Examples

Switch# configure terminal
Switch(config)# ip as-path access-list mylist deny ^65535$

Related Commands

N/A

6.7.33. ip community-list

Command Purpose

Use this command to add a community list entry.

Use the no parameter with this command to delete the community list entry.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

ip community-list LISTNUM ( deny | permit ) COMMUNITY

no ip community-list LISTNUM ( deny | permit ) COMMUNITY

Parameter	Parameter Description	Parameter Value
LISTNUM	Specifies the community ID.1-99:Standard list100-199:Expandes list	1-199
deny	Specifies the community to reject.	-
permit	Specifies the community to accept.	-
COMMUNITY	- (AA:NN local-ASno-export)	-
AA:NN	Specifies the valid value for the community number. This format represents the 32 bit communities value, where AS is the high order 16 bits and VAL is the low order 16 bits in digit format.	AA is in the range 1-65535NN is in the range of 1-65535
internet	Specifies routes not to be advertised to the Internet.	-
local-AS	Specifies routes not to be advertised to external BGP peers.	-
no-advertise	Specifies routes not to be advertised to other BGP peers.	-
no-export	Specifies routes not to be advertised outside of Autonomous System boundary.	-

Command Mode

Global Config

Default

N/A

Usage

Use the community-lists to specify BGP community attributes. The community attribute is used for implementing policy routing. It is an optional, transitive attribute and facilitates transfer of local policies through different autonomous systems. It includes community values that are 32 bits long.

There are two kinds of community-lists: the expanded and standard. The standard community-list defines the community attributes in a specified format and not with regular expressions. The expanded community-list defines the communities attributes with regular expressions.

Examples

Switch# configure terminal
Switch(config)# ip community-list 20 permit 7675:80 7675:90

Related Commands

ip community-list standard

ip community-list expanded

6.7.34. ip community-list expanded

Command Purpose

Use this command to add a community list entry.

Use the no parameter with this command to delete the community list entry.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

ip community-list expanded WORD ( deny | permit ) LINE

no ip community-list expanded WORD ( deny | permit ) LINE

Parameter	Parameter Description	Parameter Value
expanded	Add an expanded community-list entry.	-
WORD	Expanded community list name	Up to 20 characters
deny	Specifies community to reject.	-
permit	Specifies community to accept.	-
LINE	Specifies a regular expression to match the BGP AS paths.	A regular expression

Command Mode

Global Config

Default

N/A

Usage

There are two kinds of community-lists–the expanded and standard. The standard community-list defines the community attributes in a specified format and not with regular expressions. The expanded community-list defines the communities attributes with regular expressions.

Examples

Switch# configure terminal
Switch(config)# ip community-list expanded CLIST permit .*

Related Commands

ip community-list

ip community-list standard

6.7.35. ip community-list standard

Command Purpose

Use this command to add a standard community-list entry.

Use the no parameter with this command to delete the standard community-list entry.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

ip community-list standard WORD ( deny | permit ) COMMUNITY

no ip community-list standard WORD ( deny | permit ) COMMUNITY

Parameter	Parameter Description	Parameter Value
standard	Specifies a standard community list.	-
WORD	Standard community list name	Up to 20 characters
deny	Specifies community to reject.	-
permit	Specifies community to accept.	-
COMMUNITY	- (AA:NN local-ASno-export)	-
AA: NN	Specifies the valid value for the community number. This format represents the 32 bitcommunities value, where AS is the high order 16 bits and VAL is the low order 16 bits in digitSpecifies the valid value for the community number. This format represents the 32 bitcommunities value, where AS is the high order 16 bits and VAL is the low order 16 bits in digitformat.	AA is in the range 1-65535NN is in the range of 1-65535
internet	Specifies routes not to be advertised to the Internet.	-
local-AS	Specifies routes not to be advertised to external BGP peers.	-
no-advertise	Specifies routes not to be advertised to other BGP peers.	-
no-export	Specifies routes not to be advertised outside of the Autonomous System boundary.	-

Command Mode

Global Config

Default

N/A

Usage

There are two kinds of community-lists–the expanded and standard. The standard community-list defines the community attributes in a specified format without regular expressions. The expanded community-list defines the communities attributes with regular expressions.

Use the ip community-list standard command to add a standard community-list entry. The standard community-list is compiled into binary format and is directly compared with the BGP communities attribute in the BGP updates. The comparison is faster than the expanded community-list. Any community value that does not match the standard community value is automatically treated as expanded.

Examples

Switch# configure terminal
Switch(config)# ip community-list standard CLIST permit 7675:80 7675:90 no-export

Related Commands

ip community-list

ip community-list expanded

6.7.36. neighbor activate

Command Purpose

Use this command to enable the exchange of the specified AF routes with a neighboring router.

Use the no parameter with this command to disable exchange of information with a neighbor.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID activate

no neighbor NEIGHBORID activate

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

After the TCP connection is opened with the neighbor, this command is used to enable or disable the exchange of the specified AF information with a neighboring router.

To enable the exchange of multicast and VPNv4 address prefix types, neighbors are activated using the neighbor activate command in address family mode.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 1.2.3.4 activate

Related Commands

neighbor remote-as

6.7.37. neighbor advertisement-interval

Command Purpose

Use this command to set the minimum interval between sending the BGP routing updates.

Use the no parameter with this command to set the interval time to default.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID advertisement-interval TIME

no neighbor NEIGHBORID advertisement-interval

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
TIME	Advertise -interval value in seconds	0-600

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to set the minimum interval between the sending of BGP routing updates. To reduce the flapping of routes to internet, a minimum advertisement interval is set, so that the BGP routing updates are sent only per interval seconds. bgp dampening can also be used to control the effects of flapping routes. For the originated bgp routes, they would be sent out when as-origination-interval and advertisement-interval expired at the same time.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.3 advertisement-interval 45

Related Commands

N/A

6.7.38. neighbor as-origination-interval

Command Purpose

Use this command to set the minimum interval between ready to send the originated BGP routing updates.

Use the no parameter with this command to set the interval time to default.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID as-origination-interval TIME

no neighbor NEIGHBORID as-origination-interval TIME

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
TIME	Advertise -interval value in seconds	0-600

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to set the minimum interval between the ready to send of originated BGP routing updates. For the originated bgp routes they would be sent out when as-origination-interval and advertisement-interval expired at the same time.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.3 advertisement-interval 45

Related Commands

N/A

6.7.39. neighbor allowas-in

Command Purpose

Use this command to configure PE routers to allow re-advertisement of all prefixes containing duplicate Autonomous System Numbers (ASNs).

Use the no parameter with this command to disable the readvertisement of a PE router’s ASN.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBOR allowas-in [ NUMBER ]

no neighbor NEIGHBOR allowas-in

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
NUMBER	Number of occurances of AS number.Default value is 1	1-10

Command Mode

Router Configuration

Address Family Configuration

Default

Disabled

Usage

In a hub and spoke configuration, a PE router re-advertises all prefixes containing duplicate ASNs. Use the neighbor allowas-in command to configure two VRFs on each PE router to receive and re-advertise prefixes. One of the VRFs receives prefixes with ASNs from all PE routers and then advertises them to neighboring PE routers. The other VRF receives prefixes with ASNs from the CE router and re-advertises them to all PE routers in the hub and spoke configuration.

Control the number of times an ASN is advertised, by specifying a number from 1 to 10.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# address-family ipv4 vrf VRF_A
Switch(config-router-af)# neighbor 10.10.0.1 allowas-in 3

Related Commands

N/A

6.7.40. neighbor attribute-unchanged

Command Purpose

Use this command to advertise unchanged BGP attributes to the specified neighbor.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID attribute-unchanged { as-path | next-hop | med }

no neighbor NEIGHBORID attribute-unchanged { as-path | next-hop | med }

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
as-path	AS path attribute	-
next-hop	Next hop attribute	-
med	Multi Exit Discriminator	-

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

N/A

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.75 attribute-unchanged as-path med

Related Commands

N/A

6.7.41. neighbor capability orf prefix-list

Command Purpose

Use this command to advertise ORF capability to neighbors.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID capability orf prefix-list ( both | receive | send )

no neighbor NEIGHBORID capability orf prefix-list ( both | receive | send )

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
orf	Advertises ORF capability to its neighbors	-
both	Indicates that the local router can send ORF entries to its peer as well as receive ORF entries from its peer.	-
receive	Indicates that the local router is willing to receive ORF entries from its peer	-
send	Indicates that the local router is willing to send ORF entries to its peer	-

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Outbound Route Filters (ORFs) send and receive capabilities to lessen the number of updates exchanged between neighbors. By filtering updates, this option minimizes generating and processing of updates.

The local router advertises the ORF capability in send mode and the remote router receives the ORF capability in receive mode applying the filter as outbound policy. The two routers exchange updates to maintain the ORF for each

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 1.1.1.1 capability orf prefix-list both

Related Commands

N/A

6.7.42. neighbor capability route-refresh

Command Purpose

Use this command to advertise route-refresh capability to the specified neighbors.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID capability route-refresh

no neighbor NEIGHBORID capability route-refresh

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to advertise to peer about route refresh capability support. If route refresh capability is supported, then router can dynamically request that the peer readvertises its Adj-RIB-Out.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.1 capability route-refresh

Related Commands

N/A

6.7.43. neighbor default-originate

Command Purpose

Use this command to allow a BGP local router to send the default route 0.0.0.0 to a neighbor for use as a default route.

Use the no parameter with this command to send no route as a default.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID default-originate ( ROUTEMAP | )

no neighbor NEIGHBORID default-originate ( ROUTEMAP | )

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
ROUTEMAP	route-map WORD	-
route-map	The route-map to specify criteria to originate default routes	-
WORD	Route-map name	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Every router should have a default route, it is used to send datas to the network which is not existent in local RIB. To set a default route on each router can make every router have a default route, or to create a default route and broadcast it to BGP peer by this command.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.1 default-originate route-map myroute

Related Commands

N/A

6.7.44. neighbor description

Command Purpose

Use this command to associate a description with a neighbor.

Use the no parameter with this command to remove the description.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID description LINE

no neighbor NEIGHBORID description

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
LINE	A string to describing the neighbor.	Up to 80 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

None

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 1.2.3.4 description Backup router for sales.

Related Commands

N/A

6.7.45. neighbor distribute-list

Command Purpose

Use this command to filter route update from a particular BGP neighbor.

Use the no parameter with this command to remove an entry.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID distribute-list WORD ( in | out )

no neighbor NEIGHBORID distribute-list WORD ( in | out )

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
WORD	The name of IP access-list	Up to 40 characters
in	Indicates that incoming advertised routes will be filtered.	-
out	Indicates that outgoing advertised routes will be filtered.	-

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Use only one distribute-list per BGP neighbor.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 1.2.3.4 distribute-list mylist out

Related Commands

N/A

6.7.46. neighbor ebgp-multihop

Command Purpose

Use this command to accept and attempt BGP connections to external peers on indirectly connected networks.

Use the no parameter with this command to return to the default.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID ebgp-multihop ( COUNT | )

no neighbor NEIGHBORID ebgp-multihop

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
COUNT	Maximum hop count. If the maximum hop count is not set the hop count is 255.	1-255

Command Mode

Router Configuration

Default

N/A

Usage

Multihop is not established if the only route to the multihop peer is a default route. This avoids loop formation.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.34 remote-as 20
Switch(config-router)# neighbor 10.10.10.34 ebgp-multihop 5

Related Commands

N/A

6.7.47. neighbor filter-list

Command Purpose

Use this command to set up a BGP filter.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID filter-list LISTNAME ( in | out )

no neighbor NEIGHBORID filter-list LISTNAME ( in | out )

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to theneighbor peer-group and neighbor remote-as commands. When this parameter is usedwith a command, the command applies on all peers in the specified group.	Up to 20 characters
in	Indicates that incoming advertised routes will be filtered.	-
out	Indicates that outgoing advertised routes will be filtered.	-
LISTNAME	The name of an autonomous system path access list.	Up to 40 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

This command specifies an access list filter on updates based on the BGP autonomous system paths. Each filter is an access list based on regular expressions.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.34 filter-list listname out

Related Commands

N/A

6.7.48. neighbor maximum-prefix

Command Purpose

Use this command to control the number of prefixes that can be received from a neighbor.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID maximum-prefix MAXIMUM

no neighbor NEIGHBORID maximum-prefix

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
MAXIMUM	MAXPREFIX (THRESHOLD)	-
MAXPREFIX	Specifies the maximum number of prefixes permitted.	1-4294967295
THRESHOLD	<1-100> Specifies the threshold value, 1 to 100 percent.	1-100
warning-only	Only gives a warning message when the limit is exceeded.	-

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

The neighbor maximum-prefix command allows the configuration of a specified number of prefixes that a BGP router is allowed to receive from a neighbor. When the warning-only option is not used, if any extra prefixes are received, the router ends the peering. A terminated peer, stays down until the clear ip bgp command is used.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.72 maximum-prefix 1244 warning-only

Related Commands

N/A

6.7.49. neighbor next-hop-self

Command Purpose

Use this command to configure the router as the next hop for a BGP-speaking neighbor or peer group.

Use the no parameter with this command to disable this feature.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID next-hop-self

no neighbor NEIGHBORID next-hop-self

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

This command allows a BGP router to change the nexthop information that is sent to the iBGP peer. The nexthop information is set to the IP address of the interface used to communicate with the neighbor.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.72 remote-as 100
Switch(config-router)# neighbor 10.10.0.72 next-hop-self

Related Commands

N/A

6.7.50. neighbor override-capability

Command Purpose

Use this command to override a capability negotiation result.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID override-capability

no neighbor NEIGHBORID override-capability

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Default

N/A

Usage

None

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 override-capability

Related Commands

N/A

6.7.51. neighbor passive

Command Purpose

Use this command to set a BGP neighbor as passive.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

( no ) neighbor NEIGHBORID passive

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Default

N/A

Usage

N/A

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 passive

Related Commands

N/A

6.7.52. neighbor peer-group (adding a neighbor)

Command Purpose

Use this command to add a neighbor to an existing peer-group.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor IPADDRESS peer-group TAG

no neighbor IPADDRESS peer-group

Parameter	Parameter Description	Parameter Value
IPADDRESS	A.B.C.D Specifies the address of the BGP neighbor in IPv4 format.A.B.C.D Specifies the address of the BGP neighbor in IPv4 format.TAG Name of the peer-group	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to Neighbors with the same update policies are grouped into peer groups. This facilitates the updates of various policies, such as, distribute and filter lists. The peer-group is then configured easily with any of the neighbor commands. Any changes made to the peer group affect all members.

To create a peer-group use the neighbor peer-group create command and then use this command to add neighbors to the group.

Examples

This example shows a new peer-group group1 and the adding of a neighbor 10.10.0.63 to the group:

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor group1 peer-group
Switch(config-router)# neighbor 10.10.0.63 peer-group group1

Related Commands

N/A

6.7.53. neighbor peer-group (creating a peer-group)

Command Purpose

Use this command to create a peer-group.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor TAG peer-group

no neighbor TAG peer-group

Parameter	Parameter Description	Parameter Value
TAG	Name of the peer-group	-

Command Mode

Router Configuration

Default

N/A

Usage

Neighbors with the same update policies are grouped into peer groups. This facilitates the updates of various policies, such as, distribute and filter lists. The peer-group is then configured easily with any of the neighbor commands. Any changes made to the peer group affect all members. Use this command to create a peer-group.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor group1 peer-group

Related Commands

N/A

6.7.54. neighbor prefix-list

Command Purpose

Use this command to distribute BGP neighbor information as specified in a prefix list.

Use the no parameter with this command to remove an entry.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID prefix-list LISTNAME ( in | out )

no neighbor NEIGHBORID prefix-list LISTNAME ( in | out )

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
LISTNAME	The number of an AS-path access list.	Up to 40 characters
in	Specifies that the access list applies to incoming advertisements.	-
out	Specifies that the access list applies to outgoing advertisements.	-

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Use this command to specify a prefix list for filtering BGP advertisements. Filtering by prefix list matches the prefixes of routes with those listed in the prefix list. If there is a match, the route is used. An empty prefix list permits all prefixes. If a given prefix does not match any entries of a prefix list, the route is denied access. When multiple entries of a prefix list match a prefix, the entry with the smallest sequence number is considered to be a real match.

The router begins the search at the top of the prefix list, with the sequence number 1. Once a match or deny occurs, the router does not need to go through the rest of the prefix list. For efficiency the most common matches or denies are listed at the top.

The neighbor distribute-list command is an alternative to the neighbor prefix-list command and only

one of them can be used for filtering to the same neighbor in any direction.

Examples

Switch# configure terminal
Switch(config)# ip prefix-list list1 deny 30.0.0.0/24
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 prefix-list list1 in

Related Commands

ip prefix-list

6.7.55. neighbor remote-as

Command Purpose

Use this command to configure an internal or external BGP (iBGP or eBGP) TCP session with another router.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID remote-as ASNUM

no neighbor NEIGHBORID remote-as ASNUM

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
ASNUM	Neighbor`s autonomous system number	1-4294967295

Command Mode

Router Configuration

Default

N/A

Usage

This command is used to configure iBGP and eBGP sessions with other neighbors. A peer-group support of this command is configured only after creating a specific peer-group.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.73 remote-as 345

Related Commands

N/A

6.7.56. neighbor remove-private-AS

Command Purpose

Use this command to remove the private Autonomous System (AS) number from outbound updates.

Use the no parameter with this command too revert to default.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID remove-private-AS

no neighbor NEIGHBORID remove-private-AS

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

Disabled

Usage

The private AS numbers range from <64512-65535>. Private AS numbers are not advertised to the Internet. This command is used with external BGP peers only. The router removes the AS numbers only if the update includes private AS numbers. If the update includes both private and public AS numbers, the system treats it as an error.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.63 remove-private-AS

Related Commands

N/A

6.7.57. neighbor route-reflector-client

Command Purpose

Use this command to configure the router as a BGP route reflector and configure the specified neighbor as its client.

Use the no parameter with this command to indicate that the neighbor is not a client.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID route-reflector-client

no neighbor NEIGHBORID route-reflector-client

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Route reflectors are a solution for the explosion of iBGP peering within an autonomous system. By route reflection the number of iBGP peers within an AS is reduced. Use the neighbor route-reflector-client command to configure the local router as the route reflector and specify neighbors as its client.

An AS can have more than one route reflector. One route reflector treats the other route reflector as another iBGP speaker.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.72 route-reflector-client

Related Commands

N/A

6.7.58. neighbor send-community

Command Purpose

Use this command to specify that a community attribute should be sent to a BGP neighbor.

Use the no parameter with this command to remove the entry. Use the extended and no parameters to remove extended communities. Specifying no other parameter means standard communities only.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID send-community ( both | extended | standard | )

no neighbor NEIGHBORID send-community ( both | extended | standard | )

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
both	Sends Standard and Extended Community attributes	-
extended	Sends Extended Community attributes	-
standard	Sends Standard Community attributes	-

Command Mode

Router Configuration

Address Family Configuration

Default

None

Usage

By default ,community attributes are not sent to a neighbor.To use this command to enable this command.Route-map can be based on neighbor address, peer group name or AS path information.

Examples

Switch# configure terminal
Switch(config)# bgp config-type standard
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.72 send-community extended

Related Commands

N/A

6.7.59. neighbor shutdown

Command Purpose

Use this command to disable a neighbor.

Use the no parameter with this command to re-enable the neighbor.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID shutdown

no neighbor NEIGHBORID shutdown

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Default

N/A

Usage

This command shuts down any active session for the specified neighbor and clears all related routing data.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.72 shutdown

Related Commands

N/A

6.7.60. neighbor soft-reconfiguration inbound

Command Purpose

Use this command to configure to start storing updates.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID soft-reconfiguration inbound

bo neighbor NEIGHBORID soft-reconfiguration inbound

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

Use this command to store updates for inbound soft reconfiguration. Soft-reconfiguration may be used in lieu of BGP route refresh capability. Using this command enables local storage of all the received routes and their attributes. This requires additional memory. When a soft reset (inbound) is done on this neighbor, the locally stored routes are reprocessed according to the inbound policy. The BGP neighbor connection is not affected.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 soft-reconfiguration inbound

Related Commands

N/A

6.7.61. neighbor strict-capability-match

Command Purpose

Use this command to close the BGP connection if capability value does not completely match to remote peer.

Use the no parameter with this command to disable this function

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID strict-capability-match

no neighbor NEIGHBORID strict-capability-match

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters

Command Mode

Router Configuration

Default

N/A

Usage

N/A

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 strict-capability-match

Related Commands

N/A

6.7.62. neighbor timers

Command Purpose

Use this command to set the timers for a specific BGP neighbor.

Use the no parameter with this command to clear the timers for a specific BGP neighbor

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID timers KEEPALIVE HOLDTIME

no neighbor NEIGHBORID timers

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
KEEPALIVE	Frequency (in seconds) at which a router sends keepalive messages to its neighbor. The default is 60 seconds.	1-65535
HOLDTIME	Interval (in seconds) after which, on not receiving a keepalive message, the router declares a neighbor dead. The default is 180 seconds.	3-65535

Command Mode

Router Configuration

Default

N/A

Usage

Keepalive messages are sent by a router to inform another router that the BGP connection between the two is still active. The keepalive interval is the period of time between each keepalive message sent by the router. The holdtime interval is the time the router waits to receive a keepalive message and if it does not receive a message for this period it declares the neighbor dead.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 timers 60 120

Related Commands

N/A

6.7.63. neighbor unsuppress-map

Command Purpose

Use this command to selectively leak more-specific routes to a particular neighbor.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID unsuppress-map WORD

no neighbor NEIGHBORID unsuppress-map WORD

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
WORD	Name of route map	-

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

When the aggregate-address command is used with the summary-only option, the more-specific routes of the aggregate are suppressed to all neighbors. Use the unsuppress-map command to selectively leak more-specific routes to a particular neighbor.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.73 unsuppress-map mymap
Switch(config-router)# address-family ipv4 unicast
Switch(config-router-af)# neighbor 10.10.0.70 unsuppress-map mymap

Related Commands

N/A

6.7.64. neighbor update-source

Command Purpose

Use this command to allow internal BGP sessions to use any operational interface for TCP connections.

Use the no parameter with this command to restore the interface assignment to the closest interface.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID update-source IFNAME

no neighbor NEIGHBORID update-source

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
IFNAME	Specifies the loopback interface.	Supportphysical/aggregation/loopback/tunnel/vlaninterfaces

Command Mode

Router Configuration

Default

N/A

Usage

Use this command in conjunction with any specified interface on the router. The loopback interface is the interface that is most commonly used with this command. The use of loopback interface eliminates a dependency and BGP does not have to rely on the availability of a particular interface for making TCP connections.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.0.72 update-source eth-0-1

Related Commands

N/A

6.7.65. neighbor weight

Command Purpose

Use this command to set default weights for routes from this neighbor.

Use the no parameter with this command to remove a weight assignment.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor NEIGHBORID weight WEIGHT

no neighbor NEIGHBORID weight

Parameter	Parameter Description	Parameter Value
NEIGHBORID	(A.B.C.D\|TAG)	-
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
TAG	Name of an existing peer-group. For information on how to create peer groups, refer to the neighbor peer-group and neighbor remote-as commands. When this parameter is used with a command, the command applies on all peers in the specified group.	Up to 20 characters
WEIGHT	Specifies the weight this command assigns to the route.	0-65535

Command Mode

Router Configuration

Default

N/A

Usage

Use this command to specify a weight value to all routes learned from a neighbor. The route with the highest weight gets preference when there are other routes on the network.

Unlike the local-preference attribute, the weight attribute is relevant only to the local router.

The weights assigned using the set weight command overrides the weights assigned using this command.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 weight 60

Related Commands

N/A

6.7.66. neighbor fall-over bfd

Command Purpose

Use this command to establish BFD session on BGP neighbour.

Use the no parameter with this command to delete BFD session on BGP neighbour.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

neighbor A.B.C.D fall-over bfd ( multihop | )

no neighbor A.B.C.D fall-over bfd ( multihop | )

Parameter	Parameter Description	Parameter Value
A.B.C.D	Specifies the address of the BGP neighbor in IPv4 format.	IPv4 Address in A.B.C.D format
multihop	establish multihop BFD session	-

Command Mode

Router Configuration

Default

N/A

Usage

Enabling bfd on bgp neighbor.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# neighbor 10.10.10.10 fall-over bfd

Related Commands

None

6.7.67. network

Command Purpose

Use this command to specify the networks to be advertised by the BGP routing process. A unicast network address without a mask is accepted if it falls into the natural boundary of its class. A class-boundary mask is derived if the address matches its natural class-boundary.

Use the no form of this command to remove a network route entry.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

network A.B.C.D

network A.B.C.D route-map WORD

no network A.B.C.D

no network A.B.C.D route-map WORD

Parameter	Parameter Description	Parameter Value
A.B.C.D	IP prefix , e.g., 35.0.0.0	IPv4 Address in A.B.C.D format
WORD	Name of the route map	Up to 20 characters

Command Mode

Router Configuration

Address Family Configuration

Default

N/A

Usage

N/A

Examples

The following example illustrates a Class-A address configured as a network route. The natural Class-A network prefix mask length of 8 will be internally derived, that is, 2.0.0.0/8:

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# network 2.0.0.0

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# no synchronization
Switch(config-router)# network 2.0.0.0

Related Commands

N/A

6.7.68. network synchronization

Command Purpose

Use this command to ensure the exact same static network prefix, specified through any of the network commands, is local or has IGP reachability (in the NSM RIB) before being introduced into the BGP RIB.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

network synchronization

no network synchronization

Command Mode

Router Configuration

Address Family Configuration

Default

Network synchronization is disabled by default.

Usage

N/A

Examples

The following example enables IGP synchronization of BGP static network routes in the router configuration mode:

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# network synchronization

Related Commands

N/A

6.7.69. synchronization

Command Purpose

Use this command to enable IGP synchronization of Internal BGP (iBGP) learned routes with the Internal Gateway Protocol (IGP) system in the router configuration mode or in the address-family configuration mode.

Use the no parameter with this command to disable this function.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

synchronization

no synchronization

Command Mode

Router Configuration

Address Family Configuration

Default

IGP synchronization is disabled.

Usage

Synchronization is used when a BGP router should not advertise routes learned from iBGP neighbors, unless those routes are also present in an IGP (for example, OSPF). Synchronization may be enabled when all the routers in an autonomous system do not speak BGP, and the autonomous system is a transit for other autonomous systems. The no synchronization command is used when BGP router can advertise routes learned from its iBGP neighbors without waiting for the IGP reachability to be present.

Examples

The following example enables IGP synchronization of BGP static network routes in the IPv4-Unicast address family:

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config)# address-family ipv4 unicast
Switch(config-af)# network synchronization

Related Commands

N/A

6.7.70. router bgp

Command Purpose

Use this command to configure a BGP routing process.

Use the no parameter with this command to disable a routing process.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

router bgp ASN

no router bgp ASN

Parameter	Parameter Description	Parameter Value
ASN	Specifies the Autonomous System (AS) number	1-4294967295

Command Mode

Global Config

Default

N/A

Usage

The router bgp command enables a BGP routing process.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)#

Related Commands

N/A

6.7.71. show debugging bgp

Command Purpose

Use this command to display the BGP debugging option set.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show debugging bgp

Command Mode

Privileged EXEC

Default

N/A

Usage

None

Examples

Switch# show debugging bgp

Related Commands

N/A

6.7.72. show ip bgp

Command Purpose

Use this command to display BGP network information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp ( IPADDRESS | )

show ip bgp ipv4 PREFIX ( IPADDRESS | )

Parameter	Parameter Description	Parameter Value
IPADDRESS	A.B.C.D\|A.B.C.D/M Specifies the address and length.	IPv4 Address in A.B.C.D format or IPv4 Address and mask length in A.B.C.D/M format
ipv4	Specifies the address family. The type of address family determines the routing table that isSpecifies the address family. The type of address family determines the routing table that isdisplayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp 10.10.1.34/24

Related Commands

N/A

6.7.73. show ip bgp attribute-info

Command Purpose

Use this command to show bgp attribute information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp attribute-info

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp attribute-info command displaying internal attribute information:

Switch# show ip bgp attribute-info

Related Commands

N/A

6.7.74. show ip bgp cidr-only

Command Purpose

Use this command to display routes with non-natural network masks.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp cidr-only

show ip bgp ipv4 PREFIX cidr-only

Parameter	Parameter Description	Parameter Value
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp cidr-only command:

Switch# show ip bgp cidr-only

Related Commands

N/A

6.7.75. show ip bgp community

Command Purpose

Use this command to display routes matching the communities.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp community TYPE ( exact-match | )

show ip bgp ipv4 PREFIX community TYPE ( exact-match | )

Parameter	Parameter Description	Parameter Value
TYPE	- AA:NNn o-advertise\|no-export	-
AA:NN	Specifies the valid value for the community number. This format epresents the 32 bit communities value, where AS is the high order 16 bits and VAL is the low order 16 bits in digit format.	AA is in the range 1-65535NN is in the range of 1-65535
local-AS	Do not send outside local AS (well-known community).	-
no-advertise	Do not advertise to any peer (well-known community).	-
no-export	Do not export to next AS (well-known community).	-
exact-match	Specifies that display the exact match of the communities.	-
PREFIX	(multicast\|unicast)	-
multicast	Specifies a IPv4 multicast address family.	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp community 10:23 exact-match
Switch# show ip bgp ipv4 multicast community 10:23 exact-match

Related Commands

N/A

6.7.76. show ip bgp community-info

Command Purpose

Use this command to list all BGP community information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp community-info

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp community-info

Related Commands

N/A

6.7.77. show ip bgp community-list

Command Purpose

Use this command to display routes that match the community-list.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp community-list LISTNAME ( exact-match | )

show ip bgp ipv4 PREFIX community-list LISTNAME ( exact-match | )

Parameter	Parameter Description	Parameter Value
LISTNAME	Specifies the community list name.	Up to 20 characters
exact-match	Displays only routes that have exactly the same specified communities.	-
ipv4	Specifies the address family. The type of address family determines the routing table that isSpecifies the address family. The type of address family determines the routing table that isdisplayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp community-list mylist exact-match
Switch# show ip bgp ipv4 unicast community-list mylist

Related Commands

N/A

6.7.78. show ip bgp dampening

Command Purpose

Use this command to display detailed information about dampening.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp dampening ( dampened-paths | flap-statistics | parameters )

show ip bgp ipv4 PREFIX dampening ( dampened-paths | flap-statistics | parameters )

Parameter	Parameter Description	Parameter Value
dampened-paths	Display paths suppressed due to dampening.	-
flap-statistics	Display flap statistics of routes.	-
parameters	Display details of configured dampening parameters.	-
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Enable bgp dampening to maintain dampened-path information in memory. The following is a sample output displaying all the dampening parameters:

Switch# show ip bgp dampening parameters

Related Commands

N/A

6.7.79. show ip bgp filter-list

Command Purpose

Use this command to display routes conforming to the filter-list.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp filter-list LISTNAME

show ip bgp ipv4 PREFIX filter-list LISTNAME

Parameter	Parameter Description	Parameter Value
LISTNAME	Specifies the regular-expression access list name.	Up to 20 characters
ipv4	Specifies the address family. The type of address family determines the routing table that is Specifies the address family. The type of address family determines the routing table that isdisplayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp filter-list mylist
Switch# show ip bgp ipv4 unicast filter-list Switch

Related Commands

N/A

6.7.80. show ip bgp inconsistent-as

Command Purpose

Use this command to display routes with inconsistent AS Paths.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp inconsistent-as

show ip bgp ipv4 PREFIX inconsistent-as

Parameter	Parameter Description	Parameter Value
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp inconsistent-as
Switch# show ip bgp ipv4 unicast inconsistent-as

Related Commands

N/A

6.7.81. show ip bgp neighbors

Command Purpose

Use this command to display detailed information on TCP and BGP neighbor connections.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp neighbors ( IPADDRESS ( advertised-routes | RECEIVED | received-routes | routes ) | )

show ip bgp ipv4 PREFIX neighbors ( IPADDRESS ( advertised-routes | received | received-routes | routes ) | )

Parameter	Parameter Description	Parameter Value
IPADDRESS	Specifies an IPv4 address.	IPv4 Address in A.B.C.D format
advertised-routes	Displays the routes advertised to a BGP neighbor.	-
received	received prefix-filter Displays all received routes, both accepted and rejected.	-
prefix-filter	Displays the prefix-list filter.
received-routes	Displays the received routes from neighbor. To display all the received routes from the neighbor, configure the BGP soft reconfigure first. routes Displays all accepted routes learned from neighbors.	-
routes	Display routes learned from neighbor	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp neighbors command displaying information about the specified neighbor:

Switch# show ip bgp neighbors

Related Commands

N/A

6.7.82. show ip bgp paths

Command Purpose

Use this command to display BGP path information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp paths

show ip bgp ipv4 PREFIX paths

Parameter	Parameter Description	Parameter Value
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp paths

Related Commands

N/A

6.7.83. show ip bgp prefix-list

Command Purpose

Use this command to display routes matching the prefix-list.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp prefix-list LIST

show ip bgp ipv4 PREFIX prefix-list LIST

Parameter	Parameter Description	Parameter Value
LIST	Specifies the name of the IP prefix list.	Up to 40 characters
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp prefix-list mylist

Related Commands

N/A

6.7.84. show ip bgp quote-regexp

Command Purpose

Use this command to display routes matching the AS path regular expression in quotes.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp quote-regexp LINE

show ip bgp ipv4 PREFIX quote-regexp LINE

Parameter	Parameter Description	Parameter Value
LINE	Specifies a regular-expression to match the BGP AS paths	A regular-expression in quote
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp quote-regexp "Switch"

Related Commands

N/A

6.7.85. show ip bgp regexp

Command Purpose

Use this command to display routes matching the AS path regular expression.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp regexp LINE

show ip bgp ipv4 PREFIX regexp LINE

Parameter	Parameter Description	Parameter Value
regexp	Displays routes matching the AS path regular expression.	-
LINE	Specifies a regular expression to match the BGP AS paths.	A regular-expression
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp regexp myexpression

Related Commands

N/A

6.7.86. show ip bgp scan

Command Purpose

Use this command to display BGP scan status.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp scan

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

Switch# show ip bgp scan

Related Commands

N/A

6.7.87. show ip bgp summary

Command Purpose

Use this command to display a summary of BGP neighbor status.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp summary

show ip bgp ipv4 PREFIX summary

Parameter	Parameter Description	Parameter Value
ipv4	Specifies the address family. The type of address family determines the routing table that is displayed.	-
PREFIX	(multicast\|unicast)	-
unicast	Specifies a IPv4 unicast address family. This is the default option.	-
multicast	Specifies a IPv4 multicast address family.	-

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp summary command displaying a summary of BGP neighbor status:

Switch# show ip bgp summary

Related Commands

N/A

6.7.88. show ip bgp vpnv4 all

Command Purpose

Use this command to display VPNv4 NLRI specific information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp vpnv4 all TYPE

Parameter	Parameter Description	Parameter Value
all	Displays information about all VPNv4 NLRIs	-
TYPE	(A.B.C.D\|summary\|neighbors)	-
neighbors	Displays information about BGP neighbors.	-
summary	Displays summary of the BGP neighbor status.	-
A.B.C.D	Network for which information will be displayed in the BGP routing table.	IPv4 Address in A.B.C.D format

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp vpnv4 all command displaying VPNv4 specific information:

Switch# show ip bgp vpnv4 all

Related Commands

N/A

6.7.89. show ip bgp vpnv4 rd

Command Purpose

Use this command to display VPNv4 NLRI specific information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp vpnv4 rd WORD TYPE

Parameter	Parameter Description	Parameter Value
rd	Display information for a route distinguisher	-
WORD	VPN Route Distinguisher	Up to 15 characters
TYPE	- (A.B.C. Dsummary\|)	-
neighbors	Displays information about BGP neighbors.	-
summary	Displays summary of the BGP neighbor status.	-
A.B.C.D	Network for which information will be displayed in the BGP routing table.	IPv4 Address in A.B.C.D format

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp vpnv4 rd command displaying VPNv4 specific information:

Switch# show ip bgp vpnv4 rd 123

Related Commands

N/A

6.7.90. show ip bgp vpnv4 vrf

Command Purpose

Use this command to display VPNv4 NLRI specific information.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

show ip bgp vpnv4 vrf WORD TYPE

Parameter	Parameter Description	Parameter Value
vrf	VPN Routing/Forwarding instance	-
WORD	VPN Routing/Forwarding instance name	Up to 15 characters
TYPE	- (A.B.C. Dsummary\|)	-
neighbors	Displays information about BGP neighbors.	-
summary	Displays summary of the BGP neighbor status.	-
A.B.C.D	Network for which information will be displayed in the BGP routing table.	IPv4 Address in A.B.C.D format

Command Mode

Privileged EXEC

Default

N/A

Usage

N/A

Examples

This is a sample output from the show ip bgp vpnv4 rd command displaying VPNv4 specific information:

Switch# show ip bgp vpnv4 vrf 123

Related Commands

N/A

6.7.91. timers

Command Purpose

Use this command sets the BGP keepalive timer and holdtime timer values.

Use the no parameter with this command to reset timers to default value.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

timers bgp KEEPALIVE HOLDTIME

no timers bgp

Parameter	Parameter Description	Parameter Value
KEEPALIVE	<0-65535> The frequency with which the keepalive messages are sent to the neighbors.The default value is 60 seconds.	0-65535
HOLDTIME	The interval after which the neighbor is considered dead if keepalive messagesare not received. The default holdtime value is 180 seconds.	3-65535

Command Mode

Router Configuration

Default

N/A

Usage

This command is used globally to set or unset the keepalive and holdtime values for all the neighbors.

Examples

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# timers bgp 40 120

Related Commands

N/A

6.7.92. max-paths

Command Purpose

Use this command to change the maximum ecmp.

Use the no parameter with this command to revert to the default setting.

Prerequisites

Platform	Software	License
AQ-N3000	7.0	Base
AQ-N5000	7.0	Base
AQ-N6000	7.0	Base

Command Syntax

max-paths ( ebgp | ibgp ) PATHS

no max-paths ( ebgp | ibgp ) ( PATHS | )

Parameter	Parameter Description	Parameter Value
ebgp	Session EBGP ECMP	-
ibgp	Session IBGP ECMP	-
PATHS	Set multipath ECMP numbers for BGP	2-64

Command Mode

Router Configuration

Default

The default local preference value is 1.

Usage

None

Examples

The following example shows how to configure max-paths.:

Switch# configure terminal
Switch(config)# router bgp 1
Switch(config-router)# max-paths ebgp 2

Related Commands

N/A

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