Command Reference

ip dhcp relay information check

To configure a Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server to validate the relay agent information option in forwarded BOOTREPLY messages, use the ip dhcp relay information check global configuration command. Use the no form of this command to disable an information check.

ip dhcp relay information check

no ip dhcp relay information check

Syntax Description

This command has no arguments or keywords.

Defaults

The DHCP server checks relay information. Invalid messages are dropped.

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. By default, DHCP checks relay information. Invalid messages are dropped.

Examples

The following example configures the DHCP server to check that the relay agent information option in forwarded BOOTREPLY messages is valid:

ip dhcp relay information check

Related Commands

ip dhcp relay information option ip dhcp relay information policy

32Release 12.0(1)T

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Cisco Systems 32369 manual Ip dhcp relay information check

32369 specifications

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