CANOGA PERKINS 9175 Command Reference - Manual (Page 745)

CanogaOS Command Reference
42-4
Command Mode
Global configuration
Usage
This command enables a DHCP server to identify the user (for example, cable access router) sending
the request and initiate appropriate action based on this information. By default, DHCP does not insert
relay information.
The dhcp relay information option command automatically adds the circuit identifier suboption and the
remote ID suboption to the DHCP relay agent information option (also called option 82).
Examples
The following is sample output from the dhcp relay information option command:
Switch(config)# dhcp relay information option
Related Commands
dhcp relay information check
dhcp relay information policy
42.6 dhcp relay information policy
To configure the information reforwarding policy for a Dynamic Host Configuration Protocol (DHCP)
relay agent (what a relay agent should do if a message already contains relay information), use the dhcp
relay information policy command in global configuration . To restore the default relay information
policy, use the no form of this command.
Command Syntax
dhcp relay information policy {drop | keep | replace}
no dhcp relay information policy
drop Directs the DHCP relay agent to discard messages with existing relay information if
the relay information option is already present.
keep Indicates that existing information is left unchanged on the DHCP relay agent.
replace Indicates that existing information is overwritten on the DHCP relay agent.
Default
The DHCP server replaces existing relay information.
Command Mode
Global configuration
Usage
This command is used by cable access router termination systems. A DHCP relay agent may receive a
message from another DHCP relay agent that already contains relay information. By default, the relay
information from the previous relay agent is replaced.