Enabling The Dhcp Relay Agent On An Interface; Correlating A Dhcp Server Group With A Relay Agent Interface - H3C S5500-EI series Operation Manual

Operation Manual – DHCP
H3C S5500-EI Series Ethernet Switches
Follow these steps to enable DHCP:
Enter system view
Enable DHCP

3.3.2 Enabling the DHCP Relay Agent on an Interface

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:
Enter system view
Enter interface view
Enable the DHCP relay
agent on the current
interface
Note:
If the DHCP client obtains an IP address via the DHCP relay agent, the address pool of
the subnet which the IP address of the DHCP relay agent belongs to must be
configured on the DHCP server. Otherwise, the DHCP client cannot obtain a correct IP
address.

3.3.3 Correlating a DHCP Server Group with a Relay Agent Interface

To improve reliability, you can specify several DHCP servers as a group on the DHCP
relay agent and correlate a relay agent interface with the server group. When the
interface receives requesting messages from clients, the relay agent will forward them
to all the DHCP servers of the group.
To do...
system-view
dhcp enable
To do...
system-view
Interface interface-type
interface-number
dhcp select relay
Chapter 3 DHCP Relay Agent Configuration
Use the command...
Use the command...
3-4
Remarks
—
Required
Disabled by default.
Remarks
—
—
Required
With DHCP enabled,
interfaces work in the
DHCP server mode.