1034 IP Helper/DHCP Relay CommandsSyntaxip dhcp relay information checkno ip dhcp relay information checkDefault ConfigurationThis is enabled by default for a DHCP relay agent.Command ModeGlobal Configuration modeUser GuidelinesEnable DHCP Relay using the ip helper enable command. Interfaceconfiguration takes precedence over global configuration. However if there isno interface configuration then global configuration is followed.This check is enabled by default. The administrator has to ensure that therelay should be configured such that only it should insert option-82 fields andno other device near the client has the facility to insert options.ExampleThe following example enables relay information check globally:console(config)#ip dhcp relay information checkip dhcp relay information check-replyUse the ip dhcp relay information check-reply command to enable DHCPRelay to check that the relay agent information option in forwardedBOOTREPLY messages is valid. If an invalid message is received, the relayagent drops it. This information check will take effect, though enabled, onlywhen the relay agent interface is enabled to insert the suboptions.Syntaxip dhcp relay information check-reply [none]no ip dhcp relay information check-reply• none—(Optional) Disables the command function.
