Alcatel-Lucent 6850-48 Guida Di Riferimento

DHCP Relay Commands

page 36-24

OmniSwitch CLI Reference Guide

Globally enables or disables MAC address verification for incoming DHCP traffic. When this feature is 
enabled, the source MAC address is compared to the client hardware MAC address in the DHCP packet. If 
these two addresses do not match, the DHCP packet is dropped.

Enables DHCP MAC address verification for the switch.

Disables DHCP MAC address verification for the switch.

By default, this feature is disabled. 

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• When DHCP Snooping is enabled at the switch level, MAC address verification and Option-82 data 

insertion are enabled by default. In addition, the trust mode for all ports is set to the DHCP client only 
mode. 

• Changing the enabled or disabled status for MAC address verification is only allowed when DHCP 

Snooping is globally enabled for the switch.

-> ip helper dhcp-snooping mac-address verification enable

-> ip helper dhcp-snooping mac-address verification disable

Release 6.1.2; command was introduced.

iphelperDhcpSnoopingMacAddressVerificationStatus

.Globally enables or disables DHCP Snooping for the switch.

Globally enables or disables DHCP Option-82 data insertion for DHCP 
packets.