Recommended Configuration Procedure - HP 1910 User Manual

Figure 285 DHCP relay agent work process
As shown in
After receiving a DHCP-DISCOVER or DHCP-REQUEST broadcast message from a DHCP client,
1.
the DHCP relay agent fills the giaddr field of the message with its IP address and forwards the
message to the designated DHCP server in unicast mode.
Based on the giaddr field, the DHCP server returns an IP address and other configuration
2.
parameters to the relay agent, which conveys them to the client.

Recommended configuration procedure

Step
1. Enabling DHCP and configuring
advanced parameters for the
DHCP relay agent
2. Creating a DHCP server group
3. Enabling the DHCP relay agent
on an interface
Figure 285, the DHCP relay agent works as follows:
Remarks
(Required)
Enable DHCP globally and configure advanced DHCP parameters.
By default, global DHCP is disabled.
(Required)
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.
(Required)
Enable the DHCP relay agent on an interface, and correlate the
interface with a DHCP server group.
With DHCP enabled, interfaces operate in the DHCP server mode by
default.
IMPORTANT:
The DHCP relay agent works on interfaces with IP addresses manually
configured only.
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