Cisco Systems Network Card 32369 User Manual

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Command Reference
34
Release 12.0(1)T
ip dhcp relay information policy
To configure a Dynamic Host Configuration Protocol (DHCP) relay agent’s information
reforwarding policy (what a DHCP relay agent should do if a message already contains relay
information), use the ip dhcp relay information policy global configuration command. Use the no
form of this command to restore the default relay information policy.
ip dhcp relay information policy {drop | keep | replace}
no ip dhcp relay information policy
Syntax Description
Defaults
The DHCP server replaces existing relay information.
Command Modes
Global configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 12.0(1)T.
This command is used by cable modem termination systems. When a DHCP relay agent receives a
message from a another DHCP relay agent, relay information might already be present in the
message. By default, the relay information from the previous relay agent is replaced.
Examples
The following examples configure a DHCP relay agent to drop messages with existing relay
information, keep existing information, and replace existing information:
ip dhcp relay information policy drop
ip dhcp relay information policy keep
ip dhcp relay information policy replace
Related Commands
ip dhcp relay information check
ip dhcp relay information option
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.

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