Troubleshooting Dhcp Relay Agent Configuration; Symptom; Analysis; Solution - HP 3600 v2 Series Configuration Manual

Configuration procedure
Configurations on the DHCP server are also required to make the Option 82 configurations function
normally.
# Specify IP addresses for the interfaces. (Details not shown.)
# Enable DHCP.
<SwitchA> system-view
[SwitchA] dhcp enable
# 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

Troubleshooting DHCP relay agent configuration

Symptom

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

Analysis

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 that:
The DHCP is enabled on the DHCP server and relay agent.
•
The address pool on the same subnet where DHCP clients reside is available on the DHCP server.
•
• The DHCP server and DHCP relay agent are reachable to each other.
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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