TP-Link T1500-28PCT T1500-28PCTTL-SL2428PUN V3 CLI Reference Guide Guide - Page 236

Syntax ip dhcp l2relay information strategy { drop | keep | replace } no ip dhcp l2relay information strategy Parameter drop | keep | replace -- The operations for Option 82 field of the DHCP request packets from the Host. The default operation is keep. drop: Discard the packet with the Option 82 field. keep: Keep the Option 82 field in the packet. replace: Replace the option 82 field with the system option defined by the switch. Command Mode Interface Configuration Mode (interface fastEthernet / interface range fastEthernet /interface gigabitEthernet / interface range gigabitEthernet / interface port-channel / interface range port-channel) Privilege Requirement Only Admin, Operator and Power User level users have access to these commands. Example Specify the option 82 strategy as replace to replace the Option 82 field with the local Parameter on receiving the DHCP request packet for port 2: Switch(config)#interface gigabitEthernet 1/0/2 Switch(config-if)# ip dhcp l2relay information strategy replace 24.5 ip dhcp l2relay information format Description The ip dhcp l2relay information format command is used to select the format of option 82 sub-option value field. To restore to the default option, please use no ip dhcp l2relay information format command. Syntax ip dhcp l2relay information format { normal | private } no ip dhcp l2relay information format Parameter normal | private -- The format type of option 82 sub-option value field. 217