Troubleshooting Flowchart
shows the troubleshooting flowchart.
Figure 10-9
Troubleshooting flowchart for ARP learning failure
The router fails to
learn ARP entries
Does the link
between the router and
remote device function
properly?
Does the router process
ARP packets correctly?
Seek technical support
Is the fault
rectified?
Rectify the link fault
Rectify the fault according to
debugging information.
Ensure that the router sends
ARP requests and does not
discard ARP responses
Yes
Yes
Yes
Yes
No
No
No
No
End
Does the remote
device process ARP
packets correctly?
Ensure that the remote
device responds to ARP
requests
Yes
No
No
Is the fault
rectified?
Is the fault
rectified?
Yes
Troubleshooting Procedure
NOTE
Saving the results of each troubleshooting step is recommended. If troubleshooting fails to correct the fault,
you will have a record of your actions to provide Huawei technical support personnel.
Procedure
Step 1
Check that the link between the AR2200-S and the remote device works properly.
l
Perform
ping
operations between the AR2200-S and the remote device. If the ping operations
fail, check the routing configuration on the two devices.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting
10 Security
Issue 01 (2012-01-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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