l If yes, go to step 3.
Step 3 Check whether packets enter specified queues.
Run the display qos queue statistics interface command to view queue-based traffic statistics
on the outbound interface. Check whether packets enter specified queues.
l If not, rectify the fault according to 9.2.1 Packets Enter Incorrect Queues.
l If yes, go to step 4.
Step 4 Collect the following information and contact Huawei technical support personnel.
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.
9.6 Congestion Management Troubleshooting
This chapter describes common causes of congestion management faults, and provides the
corresponding troubleshooting flowcharts, troubleshooting procedures, alarms, and logs.
9.6.1 Congestion Management Fails to Take Effect
This section describes the troubleshooting flowchart and provides a step-by-step troubleshooting
procedure to use when congestion management fails to take effect.
Common Causes
This fault is commonly caused by one of the following:
l Traffic shaping is not configured on the outbound interface.
l Congestion management is not configured on the outbound interface.
l Scheduling parameters are set incorrectly.
l Packets enter incorrect queues.
Troubleshooting Flowchart
If packets in a queue are not scheduled or scheduling results are incorrect, congestion
management fails to take effect. Follow procedures shown in the troubleshooting flowchart in
Figure 9-13.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 9 QoS
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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