Displaying And Maintaining Dhcp Relay Agent Configuration; Dhcp Relay Agent Configuration Example - 3Com WX3000 Series Operation Manual

To do...
Enter system view
Enable Option 82 support on the
DHCP relay agent
Configure the strategy for the DHCP
relay agent to process request
packets containing Option 82
By default, with the Option 82 support function enabled on the DHCP relay agent, the DHCP relay
agent will adopt the replace strategy to process the request packets containing Option 82.
However, if other strategies are configured before, then enabling the 82 support on the DHCP relay
agent will not change the configured strategies.
To enable Option 82, you need to perform the corresponding configuration on the DHCP server
and the DHCP relay agent.

Displaying and Maintaining DHCP Relay Agent Configuration

Display the information about a specified
DHCP server group
Display the information about the DHCP
server group to which a specified VLAN
interface is mapped
Display the specified client address
entries on the DHCP relay agent
Clear the statistics information of the
specified DHCP server group

DHCP Relay Agent Configuration Example

Network requirements
As shown in Figure
where DHCP clients reside. The IP address of VLAN-interface 1 is 10.10.1.1/24 and IP address of
VLAN-interface 2 is 10.1.1.2/24 that communicates with the DHCP server 10.1.1.1/24. As shown in the
figure below, Switch A forwards messages between DHCP clients and the DHCP server to assign IP
addresses in subnet 10.10.1.0/24 to the clients.
system-view
dhcp relay information
enable
dhcp relay information
strategy { drop | keep |
replace }
To do...
2-4, VLAN-interface 1 on the DHCP relay agent (Switch A) connects to the network
Use the command...
Use the command...
display dhcp-server groupNo
display dhcp-server interface
vlan-interface vlan-id
display dhcp-security [ ip-address
| dynamic | static | tracker ]
reset dhcp-server groupNo
2-8
Remarks
—
Required
Disabled by default.
Optional
By default, the replace
strategy is adopted
Remarks
Available in any
view
Available in user
view