Troubleshooting Dhcp Relay Agent Configuration; Symptom; Analysis; Solution - H3C MSR 2600 Configuration Manual

Configuration procedure
# Specify IP addresses for the interfaces. (Details not shown.)
# Enable DHCP.
<RouterA> system-view
[RouterA] dhcp enable
# Enable the DHCP relay agent on Ethernet 1/1.
[RouterA] interface ethernet 1/1
[RouterA-Ethernet1/1] dhcp select relay
# Specify the IP address of the DHCP server on the relay agent.
[RouterA-Ethernet1/1] dhcp relay server-address 10.1.1.1
# Enable the DHCP relay agent to handle Option 82, and perform Option 82 related configurations.
[RouterA-Ethernet1/1] dhcp relay information enable
[RouterA-Ethernet1/1] dhcp relay information strategy replace
[RouterA-Ethernet1/1] dhcp relay information circuit-id string company001
[RouterA-Ethernet1/1] dhcp relay information remote-id string device001

Troubleshooting DHCP relay agent configuration

Symptom

DHCP clients cannot obtain configuration parameters through the DHCP relay agent.

Analysis

Some problems might occur with the DHCP relay agent or server configuration.

Solution

To locate the problem, enable debugging and execute the display command on the DHCP relay agent
to view the debugging information and interface state information.
Check that:
DHCP is enabled on the DHCP server and relay agent.
•
The DHCP server has an address pool on the same subnet as the DHCP clients.
•
The DHCP server and DHCP relay agent can reach each other.
•
The DHCP server address specified on the DHCP relay agent interface connected to the DHCP
•
clients is correct.
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