Alcatel-Lucent 6850-48 Reference Guide

DHCP Relay Commands

page 36-36

OmniSwitch CLI Reference Guide

Configures the traffic suppression status for the port. When this function is enabled, DHCP packets are not 
flooded on the default VLAN for the specified port. This will prevent DHCP communications between a 
DHCP server and a client when both devices belong to the same VLAN domain. 

This command is currently not supported. Traffic suppression is automatically enabled when DHCP 
Snooping is enabled for the switch or for specific VLANs.

ip helper dhcp-snooping port slot1/port1[-port1a] traffic-suppression {enable | disable}

slot1/port1[-port1a]

Specifies the slot number for the module and the physical port number 
on that module (e.g. 3/1 specifies port 1 on slot 3). Use a hyphen to 
specify a range of ports (e.g. 3/1-16).

Enables traffic suppression for the specified port.

Disables traffic suppression for the specified port.

By default, traffic suppression is disabled for the port.

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• Traffic suppression applies only to ports that are associated with a VLAN that has DHCP Snooping 

enabled or to all ports when DHCP Snooping is globally enabled for the switch.

• When traffic suppression is disabled, then DHCP packets are flooded on the default VLAN for the port. 

Any DHCP server in the same VLAN domain as the client will receive and respond to such packets; 
DHCP Snooping is not invoked in this scenario.

-> ip helper dhcp-snooping port 1/24 traffic-suppression enable

-> ip helper dhcp-snooping port 2/1-10 traffic-suppression enable

-> ip helper dhcp-snooping port 4/8 traffic-suppression disable

-> ip helper dhcp-snooping port 3/1-5 traffic-suppression disable

Release 6.1.2; command was introduced.
Release 6.1.5; command was deprecated.