Alcatel-Lucent OmniSwitch 6250, Cli Reference Manual, Page: 1290 / 2018

DHCP Relay Commands
page 32-14 OmniSwitch 6250 CLI Reference Guide November 2009
ip helper agent-information
Enables or disables the DHCP relay agent information option (Option-82) feature. When this feature is
enabled, local relay agent information is inserted into client DHCP packets when the agent forwards these
packets to a DHCP server.
ip helper agent-information {enable | disable}
Syntax Definitions
enable Enables the relay agent Option-82 feature for the switch.
disable Disables the relay agent Option-82 feature for the switch.
Defaults
By default, this feature is disabled on the switch.
Platforms Supported
OmniSwitch 6250
Usage Guidelines
•
This command enables the DHCP Option-82 feature for the entire switch; it is not configurable on a
per-VLAN basis.
•
When the DHCP Option-82 feature is enabled, DHCP Snooping is not available. These two features are
mutually exclusive.
•
When the relay agent receives a DHCP packet that already contains the Option-82 field, it will process
the packet based on the agent information policy configured for the switch. This policy is configured
using the
ip help agent-information policy command.
Examples
-> ip helper agent-information enable
-> ip helper agent-information disable
Release History
Release 6.6.1; command was introduced.
Related Commands
ip helper agent-information
policy Configures a policy to determine how the relay agent handles DHCP
packets that already contain the Option-82 field.
show ip helper Displays current DHCP Relay configuration information.
show ip helper stats Displays DHCP Relay statistics, including the number of client packets
received and transmitted to the DHCP server and packets dropped due to
forward delay time and maximum hops violations.