Configuring The Dhcp Relay Agent To Support Option 82; Configuration Prerequisites; Configuration Guidelines; Configuration Procedure - HP 6125G Configuration Manual

Step
1. Enter system view.
2. Configure the DHCP relay agent to
release an IP address.
Configuring the DHCP relay agent to support
Option 82

Configuration prerequisites

Before you perform this configuration, complete the following tasks:
Enable DHCP.
•
Enable the DHCP relay agent on the specified interface.
•
Correlate a DHCP server group with relay agent interfaces.
•

Configuration guidelines

To support Option 82, perform related configuration on both the DHCP server and relay agent.
•
• If the handling strategy of the DHCP relay agent is configured as replace, you must configure a
padding format for Option 82. If the handling strategy is keep or drop, you need not configure any
padding format.
If sub-option 1 (node identifier) of Option 82 is padded with the device name (sysname) of a node,
•
the device name must contain no spaces. Otherwise, the DHCP relay agent will drop the message.

Configuration procedure

To configure the DHCP relay agent to support Option 82:
Step
1. Enter system view.
2. Enter interface view.
3. Enable the relay
agent to support
Option 82.
4. Configure the
handling strategy for
requesting messages
containing Option
82.
Command
system-view
dhcp relay release ip client-ip
Command
system-view
interface interface-type
interface-number
dhcp relay information enable
dhcp relay information strategy { drop
| keep | replace }
41
Remarks
N/A
The IP address must be in a
dynamic client entry.
Remarks
N/A
N/A
Disabled by default.
Optional.
replace by default.