Planet Networking & Communication SGS-6340-24T4S Command Manual page 627

35.16 ip dhcp snooping information option allow-untrusted
(replace|)
Command：
ip dhcp snooping information option allow-untrusted (replace|)
no ip dhcp snooping information option allow-untrusted (replace|)
Function:
This command is used to set that allow untrusted ports of DHCP snooping to receive DHCP packets with option82
option. When the "replace" is setting, the potion82 option is allowed to replace. When disabling this command, all
untrusted ports will drop DHCP packets with option82 option.
Parameter:
None.
Command Mode:
Global Mode
Default:
Drop DHCP packets with option82 option received by untrusted ports.
Usage Guide:
Usually the switch with DHCP snooping function connects the terminal user directly, so close allow-untrusted by
default to avoid option82 option added by user privately. Please set uplink port as trust port when enabling the uplink
of DHCP snooping function.
Example:
Enable the function that receives DHCP packets with option82.
Switch(config)#ip dhcp snooping information option allow-untrusted
35.17 ip dhcp snooping information option delimiter
Command:
ip dhcp snooping information option delimiter [colon | dot | slash | space]
no ip dhcp snooping information option delimiter
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