Troubleshooting Dhcp Relay Agent Configuration; Symptom; Analysis; Solution - HP 830 Series Configuration Manual

# Add DHCP server 10.1.1.1 into DHCP server group 1.
[SwitchA] dhcp relay server-group 1 ip 10.1.1.1
# Enable the DHCP relay agent on VLAN-interface 1.
[SwitchA] interface vlan-interface 1
[SwitchA-Vlan-interface1] dhcp select relay
# Correlate VLAN-interface 1 to DHCP server group 1.
[SwitchA-Vlan-interface1] dhcp relay server-select 1
# Enable the DHCP relay agent to support Option 82, and perform Option 82-related configurations.
[SwitchA-Vlan-interface1] dhcp relay information enable
[SwitchA-Vlan-interface1] dhcp relay information strategy replace
[SwitchA-Vlan-interface1] dhcp relay information circuit-id string company001
[SwitchA-Vlan-interface1] dhcp relay information remote-id string device001
NOTE:
To use Option 82, you must also enable the DHCP server to handle Option 82.

Troubleshooting DHCP relay agent configuration

Symptom

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

Analysis

Some problems may 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.
Verify the following:
1. DHCP is enabled on the DHCP server and relay agent.
2. The DHCP server has an address pool on the same subnet as the DHCP clients.
3. The DHCP server and DHCP relay agent can reach each other.
4. The relay agent interface connected to DHCP clients is correlated with a correct DHCP server
group and the IP addresses of the group members are correct.
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