3.4. VLAN Commands

Command Purpose

Use this command to enter VLAN configure mode.

Prerequisites

Command Syntax

vlan database

Command Mode

Global Config

Default

None

Usage

When you try to create or remove VLAN, you must use this command to enter VLAN configure mode first. To exit VLAN configure mode, use exit command.

Examples

This example shows how to enter VLAN configure mode:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)#

This example shows how to exit VLAN configure mode:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# exit
Switch(config)#

Related Commands

exit

Command Purpose

Use the vlan VLAN configuration command to configure VLAN characteristics for a VLAN in the VLAN database. Use the no form of this command to delete a VLAN.

Prerequisites

Command Syntax

vlan VLAN_ID ( name NAME | ) ( state ( enable | disable ) | )

no vlan VLAN_ID

Command Mode

VLAN Configuration

Default

VLAN 1 is the default VLAN and all ports have been added to it by default.

Usage

Default VLAN 1 can not be removed.

Examples

This example shows how to create VLAN 11 and named it to “vlan11”:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# vlan 11 name vlan11 state enable

This example shows how to remove VLAN 11:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# no vlan 11

Related Commands

vlan VLAN_LIST

show vlan vlan

show vlan all

Command Purpose

Use the vlan VLAN_LIST configuration command to add a normal-range VLANs to the VLAN database.

Prerequisites

Command Syntax

vlan VLAN_LIST

no vlan VLAN_LIST

Command Mode

VLAN Configuration

Default

Vlan 1 is the default vlan and all ports have been added to it by default.

Usage

The vlan list should be connected with ‘-’ and ‘,’, the value should be in the range of <1-4094> and should be ascending order.

Default VLAN 1 can not be removed.

Examples

This example shows how to add vlans of “100,200,300-400”:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# vlan 100,200,300-400

This example shows how to remove vlans of “100,200,300-400”:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# no vlan 100,200,300-400

Related Commands

vlan <1-4094>

show vlan vlan

show vlan all

Command Purpose

Use this command to display specific vlan information.

Prerequisites

Command Syntax

show vlan VLAN_ID

Command Mode

Privileged EXEC

Default

None

Usage

This command is used to display VLAN property including name, state, stp id, DSCP, member ports.

Examples

This example shows how to display the information on VLAN 11:

Switch# show vlan 11

VLAN ID Name State STP ID Member ports
(u)-Untagged, (t)-Tagged
======= =============================== 
11 VLAN0011 ACTIVE 0 eth-0-3(u) eth-0-4(t)

Related Commands

show vlan all

Command Purpose

Use this command to show the information of all the VLAN.

Prerequisites

Command Syntax

show vlan all

Command Mode

Privileged EXEC

Default

None

Usage

This command is used to display all VLAN property including name, state, stp id, DSCP, member ports.

Examples

This example shows how to display the information on VLAN all:

Switch# show vlan all

VLAN ID  Name                        State   STP ID  Member ports            
       
                                                   (u)-Untagged, (t)-Tagged
======= =========================== ======= ======= ========================
1       default                     ACTIVE  0       eth-0-1(u) eth-0-2(u) 
                                                    eth-0-4(t) eth-0-5(u) 
11      VLAN0011                    ACTIVE  0       eth-0-3(u) eth-0-4(t) 

Related Commands

show vlan vlan

Command Purpose

Use this command to show the brief information on VLAN.

Prerequisites

Command Syntax

show vlan brief

Command Mode

Privileged EXEC

Default

None

Usage

This command is used to display all VLAN information for all bridges, including static and dynamic.

Examples

This example shows how to display the brief information on VLAN:

Switch# show vlan brief

VLAN ID  Name                        State   STP ID  Member ports                   
                                                    (u)-Untagged, (t)-Tagged
======= =========================== ======= ======= =====================
1       default                      ACTIVE  0      eth-0-1(u) eth-0-2(u) 
                                                    eth-0-4(u) eth-0-5(u) 
10      VLAN0010                     ACTIVE  0      eth-0-3(u) 

Related Commands

show vlan vlan

Command Purpose

Use this command to show the vlan configurations on all bridge ports or a bridge port.

Prerequisites

Command Syntax

show interface switchport { interface IFNAME | }

Command Mode

Privileged EXEC

Default

None

Usage

This command is used to display one or all VLAN’s L2 configurations.

Examples

This example shows how to display the vlan configurations on all bridge ports or a bridge port:

Switch# show interface switchport interface eth-0-1

  Interface name         : eth-0-1
  Switchport mode        : access
  Ingress filter         : enable
  Acceptable frame types : vlan-untagged only
  Default Vlan           : 1
  Configured Vlans       : 1

  Interface name         : eth-0-2
  Switchport mode        : access
  Ingress filter         : enable
  Acceptable frame types : vlan-untagged only
  Default Vlan           : 1
  Configured Vlans       : 1

Related Commands

switchport mode access

switchport mode trunk

Command Purpose

Use this command to allow or remove the access port to the specifid vlan

Prerequisites

Command Syntax

switchport access allowed vlan ( add|remove ) VLAN_ID_LIST

Command Mode

Interface Configuration

Default

None

Usage

This command used to allow or forbid the port transmit in specified vlan.

Examples

This example shows how to add the access port to vlan11:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport access allowed vlan add 11

This example shows how to remove the access port to vlan12:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport access allowed vlan remove 12

Related Commands

switchport trunk allowed

Command Purpose

Use this command to add port to a specified.Use the no form of this command to add port to vlan1.

Prerequisites

Command Syntax

switchport access vlan VLAN_ID

no switchport access vlan

Command Mode

Interface Configuration

Default

All ports are default in vlan 1

Usage

Used the switchport mode access command to switch the port to access mode before use this command.

Examples

This example shows how to add the access port to vlan11:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport access vlan 11

This example shows how to revert the port to vlan1:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# no switchport access vlan

Related Commands

switchport mode access

Command Purpose

Use this command to swith port to access mode.

Prerequisites

Command Syntax

switchport mode access

Command Mode

Interface Configuration

Default

None

Usage

Access mode used to connect terminal, e.g:PC.The FDB on the port will be cleared when switch the port mode.

Examples

This example shows how to set the port to access mode:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport mode access

Related Commands

switchport mode trunk

Command Purpose

Use this command to swith port to trunk mode.

Prerequisites

Command Syntax

switchport mode trunk

Command Mode

Interface Configuration

Default

None

Usage

Trunk mode used to connect swith device or terminal.The FDB on the port will be cleared when switch the port mode.

Examples

This example shows how to set the port to trunk mode:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport mode trunk

Related Commands

switchport mode access

Command Purpose

Use this command to allow or remove the trunk port to the specifid vlan

Prerequisites

Command Syntax

switchport trunk allowed vlan ( add VLAN_ID_LIST|remove VLAN_ID_LIST | all | none )

no switchport trunk

Command Mode

Interface Configuration

Default

None

Usage

This command used to allow or forbid the port transmit in specified vlan.

Examples

This example shows how to add the port in vlan11,12:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport trunk allowed vlan add 11,12

This example shows how to remove the port from vlan11,12:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport trunk allowed vlan remove 11,12

This example shows how to allow the port transmit in all vlan:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport trunk allowed vlan all

This example shows how to forbid the port transmit in all vlan:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport trunk allowed vlan none

Related Commands

switchport access allowed

Command Purpose

Use this command to configure the default VLAN for this trunk port.

Prerequisites

Command Syntax

switchport trunk native vlan VLAN_ID

no switchport trunk native vlan

Command Mode

Interface Configuration

Default

vlan 1

Usage

This command is used to set the native VLAN for sending and receiving untagged traffic.

Examples

This example shows how to set the native vlan to vlan 10 on the interface:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport trunk native vlan 10

This example shows how to return the native vlan to default on the interface:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# no switchport trunk native vlan

Related Commands

switchport trunk allowed

Command Purpose

Use this command to strip the packets vlan tag out of this port.

Prerequisites

Command Syntax

switchport trunk untagged vlan VLAN_ID_LIST

no switchport trunk untagged vlan VLAN_ID_LIST

Command Mode

Interface Configuration

Default

None

Usage

None

Examples

This example shows how to allocate the needing strip vlan tag on the interface.:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# switchport trunk untagged vlan 1-2

Related Commands

None

Command Purpose

Use this command to disable bridge function on specific VLAN. To enable it, use the no form of this command.

Prerequisites

Command Syntax

vlan VLAN_ID bridge disable

no vlan vlan bridge disable

Command Mode

VLAN Configuration

Default

Vlan bridge enable

Usage

None

Examples

This example shows how to disable bridge function on VLAN 2:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# vlan 10 bridge disable

This example shows how to enable bridge function on VLAN 2:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# no vlan 10 bridge disable

Related Commands

None

Command Purpose

Use this command to enable the statistics of VLAN.

To disable the statistics, use the no form of this command.

Prerequisites

Command Syntax

vlan VLAN_ID statistics enable

no vlan VLAN_ID statistics enable

Command Mode

VLAN Configuration

Default

inactive

Usage

none

Examples

This example shows how to enable the statistics of vlan 2:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# vlan 2 statistics enable

This example shows how to disable the statistics of vlan 2:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# no vlan 2 statistics enable

Related Commands

vlan statistics interval

clear vlan statistics

show vlan vlan statistics

Command Purpose

Use this command to set sample interval.

To restore to default value, use the no form of this command.

Prerequisites

Command Syntax

vlan statistics interval VALUE

no vlan statistics intval

Command Mode

VLAN Configuration

Default

10s

Usage

none

Examples

This example shows how to set sample interval:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# vlan statistics interval 20

Related Commands

vlan statistics enable

clear vlan statistics

show vlan vlan statistics

Command Purpose

Use this command to clear statistics information.

Prerequisites

Command Syntax

clear vlan VLAN_ID statistics

Command Mode

Privileged EXEC

Default

none

Usage

none

Examples

This example shows how to clear vlan statistics:

Switch# clear vlan 2 statistics

Related Commands

vlan statistics enable

vlan statistics interval

show vlan vlan statistics

Command Purpose

Use this command to show statistics information.

Prerequisites

Command Syntax

show vlan VLAN_ID statistics

Command Mode

Privileged EXEC

Default

none

Usage

none

Examples

This example shows how to show vlan statistics:

Switch# show vlan 2 statistics

VLAN: 2
-----------------------------------
Item Packets
-----------------------------------
Inbound: 3654365
Outbound: 3654365
-----------------------------------

Related Commands

vlan statistics enable

vlan statistics interval

Command Purpose

Use this command to show the resource statistic used by vlan statistics.

Prerequisites

Command Syntax

show resource vlan-stats

Command Mode

Privileged EXEC

Default

none

Usage

none

Examples

This example shows how to show resource used by vlan statistics:

Switch# show resource vlan-stats

VLAN-STATS
Resource                         Used          Capability
=============================================================
Applied VLAN Stats Entry         1             128

Related Commands

vlan statistics enable

Command Purpose

Use this command to enable the statistics of VLAN include interframe.

To disable the statistics include-interframe, use the disable form of this command.

Prerequisites

Command Syntax

vlan VLAN_ID statistics include-interframe enable

vlan VLAN_ID statistics include-interframe disable

Command Mode

VLAN Configuration

Default

disable

Usage

none

Examples

This example shows how to enable the statistics include-interframe of vlan 2:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)# vlan 2 statistics include-interframe enable

This example shows how to disable the statistics include-interframe of vlan 2:

Switch# configure terminal
Switch(config)# vlan database
Switch(config-vlan)#vlan 2 statistics include-interframe disable

Related Commands

vlan statistics enable

clear vlan statistics