Configuration Task List; Configuring The Dhcp Relay Agent - 3Com Switch 4800G 24-Port Configuration Manual

Configuration Task
List
Configuring the DHCP
Relay Agent
Enabling DHCP
Enabling the DHCP Relay
Agent on an Interface
If a reply returned by the DHCP server contains Option 82, the DHCP relay agent
will remove the Option 82 before forwarding the reply to the client.
If a client's
requesting Handling
message has... strategy
Option 82 Drop
Keep
Replace
no Option 82 -
-
Complete the following tasks to configure the DHCP relay agent:
Task
"Enabling DHCP" on page 815
"Enabling the DHCP Relay Agent on an Interface" on page 815
"Correlating a DHCP Server Group with a Relay Agent Interface" on page 816
"Configuring the DHCP Relay Agent to Send a DHCP-Release Request" on page
816
"Configuring the DHCP Relay Agent Security Functions" on page 817
"Configuring the DHCP Relay Agent to Support Option 82" on page 818
Enable DHCP before performing other DHCP-related configurations.
Follow these steps to enable DHCP:
To do...
Enter system view
Enable DHCP
With this task completed, upon receiving a DHCP request from the enabled
interface, the relay agent will forward the request to a DHCP server for address
allocation.
Follow these steps to enable the DHCP relay agent on an interface:
Padding
format The DHCP relay agent will...
Random Drop the message.
Random Forward the message without changing Option 82.
normal Forward the message after replacing the original
Option 82 with the Option 82 padded in normal
format.
verbose Forward the message after replacing the original
Option 82 with the Option 82 padded in verbose
format.
normal Forward the message after adding the Option 82
padded in normal format.
verbose Forward the message after adding the Option 82
padded in verbose format.
Use the command...
system-view
dhcp enable

Configuration Task List

815
Remarks
Required
Required
Required
Optional
Optional
Optional
Remarks
-
Required
Disabled by default.