3Com Switch 8800 Advanced Software V5 Configuration Guide

Enabling the DHCP Server to Support Option 82 731
Enabling the DHCP
Server to Support
Option 82
When the DHCP server receives a message with Option 82 from a relay agent, if
the server supports Option 82, it will assign an IP address to the requesting client,
and if the server does not support Option 82, it will ignore the message.
Configuration prerequisites
Before performing this configuration, you have finished the configuration tasks of
the DHCP server.
Enabling the DHCP server to support Option 82
To enable the DHCP server to support Option 82, use the following commands:
n
To support Option 82, it is required to perform configuration on both the DHCP
server and relay agent. Refer to
“Configuring the DHCP Relay Agent to Support
Option 82” on page 740 for related configuration details.
Specify the number of ping
packets
dhcp server ping packets
number
Optional
One ping packet by default.
The value "0" indicates that
no ping operation is
performed.
Configure a timeout
waiting for ping responses
dhcp server ping timeout
milliseconds
Optional
500 ms by default.
The value "0" indicates that
no ping operation is
performed.
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enable the server to
support Option 82
dhcp server relay information
enable
Optional
Enabled by default