l If there is no command output, the interface is not configured with interface-based traffic
policing or interface-based traffic policing fails to take effect. Go to step 2.
l If there is command output, interface-based traffic policing is configured successfully. Go
to step 3.
Step 2 Check whether the interface is correctly configured with interface-based traffic policing.
Run the display this command in the interface view to check whether the qos car command is
used.
l If not, run the qos car command to configure the QoS CAR correctly.
l If yes, check whether the qos car command is used in the correct direction. To limit the rate
of incoming packets, inbound must be configured. To limit the rate of outgoing packets,
outbound must be configured.
NOTE
On the AR2200-S, LAN-side boards only support interface-based traffic policing in the inbound
direction.
– If the qos car command is used in the incorrect direction, run the qos car command to
configure CAR in the correct direction.
– If the qos car command is used in the correct direction, go to step 3.
Step 3 Check whether CAR parameters are set correctly.
Run the qos car command to check whether the CIR value is correct.
NOTE
If the CBS value is large, it may take a long time for traffic policing to take effect. Wait for a period of
time or reduce the CBS value, and then check whether traffic policing takes effect.
l If CAR parameters are set incorrectly, run the qos car command to modify CAR parameters.
l If CAR parameters are correct, go to step 4.
Step 4 Check whether the interface is configured with flow-based traffic policing.
NOTE
If interface-based traffic policing and flow-based traffic policing are applied to the same direction on an
interface, the smaller CIR value takes effect.
Run the display this command in the view of the inbound interface to check whether the traffic-
policy command is used in the same direction as the qos car command.
l If the traffic-policy command is used, run the display traffic-policy applied-record
command to check the traffic policy record and the traffic behavior in the traffic policy. If
the traffic policy is applied successfully, run the display traffic behavior user-defined
command to check the traffic behavior configuration.
– If the traffic behavior contains the CAR action and the CIR value is smaller than the CIR
value for interface-based traffic policing, the CIR value in the traffic behavior takes effect.
Increase the CIR value in the traffic behavior or delete the traffic policy from the interface.
– If the traffic policy fails to be applied, the traffic behavior does not contain the CAR
action, or the CIR value in the traffic behavior is greater than the CIR value for interface-
based traffic policing, go to step 5.
l If the traffic-policy command is not used, go to step 5.
Step 5 Collect the following information and contact Huawei technical support personnel.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 9 QoS
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
250
To Next Page
Loading...
