Option 82 Configuration Example; Troubleshooting Dhcp Relay Agent Configuration; Symptom - HPE FlexNetwork HSR6800 Configuration Manual
Comware 7 layer 3, ip services
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Also See for FlexNetwork HSR6800:
- Security command reference (538 pages) ,
- Configuration manual (482 pages) ,
- Command reference manual (153 pages)
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# Enable the DHCP relay agent on GigabitEthernet 2/1/1.
[RouterA] interface gigabitethernet 2/1/1
[RouterA-GigabitEthernet2/1/1] dhcp select relay
# Specify the IP address of the DHCP server on the relay agent.
[RouterA-GigabitEthernet2/1/1] dhcp relay server-address 10.1.1.1
Verifying the configuration
# Verify that DHCP clients can obtain IP addresses and all other network parameters from the DHCP
server through the DHCP relay agent. (Details not shown.)
# Display the statistics of DHCP packets forwarded by the DHCP relay agent.
[RouterA] display dhcp relay statistics
# Display relay entries if you have enabled relay entry recording on the DHCP relay agent.
[RouterA] display dhcp relay client-information
Option 82 configuration example
Network requirements
As shown in
before forwarding them to the DHCP server (Router B).
•
The Circuit ID sub-option is company001.
•
The Remote ID sub-option is device001.
To use Option 82, you must also enable the DHCP server to handle Option 82.
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 GigabitEthernet 2/1/1.
[RouterA] interface gigabitethernet 2/1/1
[RouterA-GigabitEthernet2/1/1] dhcp select relay
# Specify the IP address of the DHCP server on the relay agent.
[RouterA-GigabitEthernet2/1/1] dhcp relay server-address 10.1.1.1
# Enable the DHCP relay agent to handle Option 82, and perform Option 82 related configuration.
[RouterA-GigabitEthernet2/1/1] dhcp relay information enable
[RouterA-GigabitEthernet2/1/1] dhcp relay information strategy replace
[RouterA-GigabitEthernet2/1/1] dhcp relay information circuit-id string company001
[RouterA-GigabitEthernet2/1/1] dhcp relay information remote-id string device001
Troubleshooting DHCP relay agent configuration
Symptom
DHCP clients cannot obtain configuration parameters through the DHCP relay agent.
Figure
29, the DHCP relay agent (Router A) replaces Option 82 in DHCP requests
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Troubleshooting
