Ip Helper Agent-Information Policy - Alcatel-Lucent 060321-10, Rev. B Cli Reference Manual

DHCP Relay Commands

ip helper agent-information policy

Configures a policy that determines how the DHCP relay agent handles the DHCP packets that already
contain an Option-82 field.
ip helper agent-information policy {drop | keep | replace}
Syntax Definitions
drop
keep
replace
Defaults
By default, DHCP packets that already contain an Option-82 field are dropped.
Platforms Supported
OmniSwitch 10K
Usage Guidelines
•
The agent information policy is not applied if the DHCP relay agent receives a DHCP packet from a
client that contains a non-zero value for the gateway IP address (giaddr). In this case, the agent does
not insert the relay agent information option into the DHCP packet and forwards the packet to the
DHCP server.
•
Note that if a DHCP packet contains a gateway IP address (giaddr) value that matches a local subnet
and also contains the Option-82 field, the packet is dropped by the relay agent.
Examples
-> ip helper agent-information policy drop
-> ip helper agent-information policy keep
-> ip helper agent-information policy replace
Release History
Release 7.1.1; command introduced.
OmniSwitch CLI Reference Guide
Drop DHCP packets that already contain an Option-82 field.
Keep the existing Option-82 field information and continue to relay the
DHCP packet.
Replace the existing Option-82 field information with local relay agent
information and continue to relay the DHCP packet.
March 2011
ip helper agent-information policy
page 15-15