13.16. UDP Helper Commands

13.16.1. ip udp-helper enable

Command Purpose

Use this command to enable the udp-helper.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

ip udp-helper enable

Command Mode

Global Config

Default

Disable

Usage

When ip udp-helper is enabled, the default udp dest port of 37, 49, 53, 69, 137, 138 will be configured.

Examples

This example shows how to enable ip udp-helper:

Switch# configure terminal
Switch(config)# ip udp-helper enable

13.16.2. ip udp-helper disable

Command Purpose

Use this command to disable the udp-helper.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

ip udp-helper disable

Command Mode

Global Config

Default

Disable

Usage

When ip udp-helper is disabled, the all configured udp dest port will be cleared.

Examples

This example shows how to enable attack trace:

Switch# configure terminal
Switch(config)# ip udp-helper disable

Related Commands

N/A

13.16.3. ip udp-helper port

Command Purpose

Use this command to configure the udp helper port.Use the no form of this command to unset the udp helper port.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

ip udp-helper port ( NUM | dns | netbios-ds | netbios-ns | tacacs | tftp | time )

no ip udp-helper port ( NUM | dns | netbios-ds | netbios-ns | tacacs | tftp | time )

Parameter

Parameter Description

Parameter Value

NUM

UDP Destination Port NUM

<1-65535>

dns

Domain Name Service(53)

netbios-ds

NetBios datagram service(138)

netbios-ns

NetBios name service(137)

tacacs

TAC Access Control System(49)

tftp

Trivial File Transfer Protocol(69)

time

Time service(37)

Command Mode

Global Config

Default

None

Usage

None

Examples

This example shows how to configure udp-helper port:

Switch# configure terminal
Switch(config)# ip udp-helper port 30

This example shows how to unconfigure udp-helper port:

Switch# configure terminal
Switch(config)# no ip udp-helper port 30

Related Commands

N/A

13.16.4. ip udp-helper server

Command Purpose

Use this command to configure the udp-helper server ip on interface.Use the no form of this command to clear the udp-helper server ip on interface.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

ip udp-helper server IP_ADDR

ip udp-helper server ( IP_ADDR | )

Parameter

Parameter Description

Parameter Value

IP_ADDR

IPv4 address

Command Mode

Interface Configuration

Default

None

Usage

The udp-helper server ip can only configured on L3 physical port or L3 agg port or vlaninterface.

Agg member port can’t be configured.

Examples

This example shows how to configure udp-helper server 1.1.1.1:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# no switchport
Switch(config-if)# ip udp-helper server 1.1.1.1

This example shows how to clear udp-helper server 1.1.1.1:

Switch# configure terminal
Switch(config)# interface eth-0-1
Switch(config-if)# no switchport
Switch(config-if)# no ip udp-helper server 1.1.1.1

Related Commands

N/A

13.16.5. show ip udp-helper server

Command Purpose

Use this command to display the udp-helper server information.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

show ip udp-helper server UnicodeFF08interface IFMANE | UnicodeFF09

Parameter

Parameter Description

Parameter Value

IFMANE

Interface Name

Command Mode

Privileged EXEC

Default

None

Usage

None

Examples

This example shows how to display the udp-helper server information:

Switch# show ip udp-helper server
Switch# show ip udp-helper server
Interface Server IP Packet Received Packet Dropped

| ————–+—————-+—————+—————

eth-0-1 1.1.1.1 0 0

Related Commands

N/A

13.16.6. show resource udp-helper

Command Purpose

Use this command to display the resource of udp-helper port.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

show resource udp-helper

Command Mode

Privileged EXEC

Default

None

Usage

None

Examples

This example shows how to display the resource of udp-helper port information:

Switch# show resource udp-helper
Switch# show resource udp-helper
Udp-Helper
Resource Used Capability

| =============================================================

Udp-Helper Port 6 184

Related Commands

N/A

13.16.7. clear ip udp-helper statistics

Command Purpose

Use this command to clear the statistics of udp-helper.

Prerequisites

Platform

Software

License

Comments

AQ-N3000

7.0

Base

AQ-N5000

7.0

Base

AQ-N6000

7.0

Base

Command Syntax

clear ip udp-helper statistics

Command Mode

Privileged EXEC

Default

None

Usage

None

Examples

This example shows how to clear udp-helper statistics on interface:

Switch clear ip udp-helper statistics

Related Commands

N/A