Configuring Queue-based Congestion Management

Procedure

1. Run system-view

   The system view is displayed.

2. Run qos queue-profile queue-profile-name

   A queue profile is created and the queue profile view is displayed.

3. Run the following commands as required.

   • On a WAN interface, run schedule { pq start-queue-index [ to end-queue-index ] | wfq start-queue-index [ to end-queue-index ] }^*

     A scheduling mode is configured for each queue on the WAN interface.

   • On a layer 2 VE interface, run schedule { pq start-queue-index [ to end-queue-index ] | wfq start-queue-index [ to end-queue-index ] }^*

     A scheduling mode is configured for each queue on the layer 2 VE interface.

   • On a LAN interface, run schedule { pq start-queue-index [ to end-queue-index ] | drr start-queue-index [ to end-queue-index ] | wrr start-queue-index [ to end-queue-index ] }^*

     A scheduling mode is configured for each queue on the LAN interface.

     By default, all the queues on the LAN side use WRR; Ethernet WAN interfaces do not use queue scheduling, and other WAN interfaces use WFQ.

4. (Optional) Run queue { start-queue-index [ to end-queue-index ] } &<1-10> length { bytes bytes-value | packets packets-value }^*

   The length of each queue is set on the interface.

   • A queue profile that defines the queue length using the queue length command cannot be applied to Layer 2 FE interfaces and Layer 2 GE interfaces.

   • A queue profile that defines the queue length using the queue length command cannot be applied to an interface of the 8ES2G or 8ES2GS card.

   • When a queue profile is applied to a LAN interface, the queue length can be set to an integer in the range of 1 to 25.

5. (Optional) Run queue { start-queue-index [ to end-queue-index ] } &<1-10> weight weight-value

   The weight of each queue is set on the interface.

   By default, the weight of a queue is 10.

   A queue profile that defines the queue weight using the queue weight command cannot be applied to Layer 2 FE interfaces.

   A queue profile that defines the queue weight using the queue weight command cannot be applied to an interface of the 8ES2G or 8ES2GS card.

6. Run quit

   Exit from the queue profile view.

7. Run interface interface-type interface-number

   The interface view or sub-interface view is displayed.

8. Run qos queue-profile queue-profile-name

   The queue profile is applied to the interface or sub-interface.