Correlating A Dhcp Server Group With A Relay Agent Interface; Configuration Guidelines; Configuration Procedure - HP 10500 Series Configuration Manual

Step
2. Enter interface view.
3. Enable the DHCP relay agent
on the current interface.
Correlating a DHCP server group with a relay
agent interface
To improve availability, 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 request messages
from clients, the relay agent forwards them to all DHCP servers of the group.

Configuration guidelines

Follow these guidelines when you correlate a DHCP server group with a relay agent interface:
• You can specify up to 20 DHCP server groups on the relay agent.
You can specify up to eight DHCP server addresses for each DHCP server group.
•
The IP addresses of DHCP servers and those of relay agent's interfaces that connect DHCP clients
•
cannot be on the same subnet. Otherwise, the client cannot obtain an IP address.
• A DHCP server group can correlate with one or multiple DHCP relay agent interfaces, while a relay
agent interface can only correlate with one DHCP server group. If you use the dhcp relay
server-select command multiple times, the most recent configuration takes effect. However, if the
specified DHCP server group does not exist, the interface still uses the previous correlation.
The group-id argument in the dhcp relay server-select command is configured by using the dhcp
•
relay server-group command.

Configuration procedure

To correlate a DHCP server group with a relay agent interface:
Step
1. Enter system view.
2. Create a DHCP server group
and add a server into the group.
3. Enter interface view.
4. Correlate
group with the current interface.
Command
interface interface-type
interface-number
dhcp select relay
Command
system-view
dhcp relay server-group group-id ip
ip-address
interface interface-type
interface-number
the DHCP server
dhcp relay server-select group-id
59
Remarks
N/A
With DHCP is enabled, an
interface works in the DHCP server
mode.
Remarks
N/A
Not created by default.
N/A
By default, no interface is
correlated with any DHCP
server group.