Figure 9-3 Troubleshooting flowchart for packets entering incorrect queues
Packets enter
incorrect queues
EndSeek technical
support
No
No
Delete or modify
configurations
Is fault rectified?
Yes
Yes
No
Yes
Correctly configure
priority mapping
Is fault rectified?
No
Yes
No
Yes
Is priority type trusted
by interface correct?
Correctly set
priority type trusted
by interface
Is fault rectified?
No
Yes
Is priority mapping
correct?
Are there
configurations affecting
packet enqueuing?
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 type of the priority trusted by the inbound interface is correct.
Run the display this command in the view of the inbound interface to view the configuration
of the trust command. (If the trust command is not used, the system does not trust any priority
by default.) Check whether the type of the priority trusted by the inbound interface is correct.
NOTE
If the trust command is not used, the AR2200-S sends packets to queues based on the default 802.1p
priority configured by using the port priority command. As a result, all the packets enter the same queue
and the AR2200-S cannot provide differentiated services.
l If the type of the priority trusted by the inbound interface is incorrect, run the trust command
to change the type of the priority trusted by the inbound interface.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 9 QoS
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
238
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