show ip-security dhcp-snooping

show ip-security dhcp-snooping [ {vlan} vlan_name | vlan vlan_list]

Description

Displays the DHCP (Dynamic Host Configuration Protocol) snooping configurations on the switch.

Syntax Description

`vlan_name`	Specifies the name of the DHCP-snooping VLAN (Virtual LAN).
`vlan_name`	Specifies the name of the DHCP-snooping VLAN list.

Default

N/A.

Usage Guidelines

The switch displays the following DHCP snooping information:

DHCP snooping enabled on ports—The ports that have DHCP snooping enabled.
Trusted ports—The ports configured as trusted ports.
Trusted DHCP servers—The servers configured as trusted DHCP servers.
Port—The specific port that has DHCP snooping enabled.
Violation-action—The action the switch takes upon detecting a rogue DHCP packet on the port.

Example

The following sample output displays the DHCP snooping settings for the switch:

# show ip-security dhcp-snooping vlan "Default"
DHCP Snooping enabled on ports: 7, 9, 11
Trusted Ports: None
Trusted DHCP Servers: None
Bindings Restoration     : Enabled
Bindings Filename        : dhcpsonia.xsf
Bindings File Location   :
Primary Server  : 10.1.1.14, VR-Default, TFTP
Secondary Server: None
Bindings Write Interval  : 5 minutes
Bindings last uploaded at:
------------------------------------
Port            Violation-action
------------------------------------
7               none
9               none
11              none

History

This command was first available in ExtremeXOS 11.6.

The vlan_list variable was added in ExtremeXOS 16.1.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.

Published December 2017prev | next

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