l If no information is displayed, the DHCP server IP address is not configured on the DHCP
relay agent. Use either of the following methods to configure the DHCP server:
– Run the dhcp relay server-ip ip-address command to configure the DHCP server IP
address on the DHCP relay agent.
– Run the dhcp relay server-select group-name command to bind the interface to a DHCP
server group and run the dhcp-server command to add a DHCP server to the DHCP
server group.
Step 5 Check that DHCP servers have been added to the DHCP server group.
NOTE
If the interface of the DHCP relay agent is bound to a DHCP server group but no DHCP server has been
added to the DHCP server group, no DHCP server can allocate IP addresses to DHCP clients connected
to the DHCP relay agent.
Run the display dhcp server group group-name command to check whether DHCP servers
have been added to the DHCP server group.
l If the Server-IP field is displayed, DHCP servers have been added to the DHCP server group.
Go to step 6.
l If the Server-IP field is not displayed, no DHCP server has been added to the DHCP server
group. Run the dhcp-server command to add DHCP servers to the DHCP server group.
Step 6 Check that the configurations of other devices along the link between the DHCP client and the
DHCP server are correct, including DSLAMs, LAN switches, and other clients.
Check whether the configurations of other devices along the link are correct and modify
configurations as needed. If the client still cannot obtain an IP address after the above steps are
complete, go to step 7.
NOTE
For details on how to check the configurations of the DHCP server, see 7.2.1 A Client Cannot Obtain an
IP Address (the AR2200-S Functions as the DHCP Server).
Step 7 Contact Huawei technical support personnel and provide them with the following information.
l Results of the preceding troubleshooting procedure
l Configuration file, log file, and alarm file of the AR2200-S
----End
Relevant Alarms and Logs
Relevant Alarms
None.
Relevant Logs
None.
7.3 RIP Troubleshooting
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 7 IP Forwarding and Routing
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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