Configuration Guide DHCP Snooping Commands
14.17 ip dhcp snooping vlan information option format-type circuit-id
string
Use this command to configure the option82 sub-option circuit-id as user-defined (the storage format
is ASCII) and to perform the packet forwarding.
Use the no form of this command to restore the default setting.
ip dhcp snooping vlan vlan-id information option format-type circuit-id string ascii-string
no ip dhcp snooping vlan vlan-id information option format-type circuit-id string ascii-string
The VLAN where the DHCP request packets are
The user-defined content to fill to the Circuit ID
This function is disabled by default.
Interface configuration mode
This command is used to add the option82 to the DHCP request packets. The content of the
sub-option circuit-id is customized with 3 to 63 bytes, and the DHCP server will assign the addresses
according the option82 information.
The following example adds the option82 to the DHCP request packets with the content of the
sub-option circuit-id as port-name.
Ruijie# configure terminal
Ruijie(config)# interface fastEthernet 0/1
Ruijie(config-if)# ip dhcp snooping vlan 4094 information option format-type
circuit-id string port-name
Ruijie(config-if)# end
14.18 renew ip dhcp snooping database
Use this command to import the information in current flash to the DHCP Snooping binding database
manually as needed.