Configuring Queue-based WRED

Procedure

1. Configuring a drop profile
   1. Run system-view

      The system view is displayed.

   2. Run drop-profile drop-profile-name

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

   3. (Optional) Run wred { dscp | ip-precedence }

      A WRED drop profile based on DSCP or IP priorities is configured.

   4. Run the following commands as required.

      • Run dscp { dscp-value1 [ to dscp-value2 ] } &<1-10> low-limit low-limit-percentage high-limit high-limit-percentage discard-percentage discard-percentage

        WRED parameters based on DSCP priorities are set.

      • Run ip-precedence { ip-precedence-value1 [ to ip-precedence-value2 ] } &<1-10> low-limit low-limit-percentage high-limit high-limit-percentage discard-percentage discard-percentage

        WRED parameters based on IP priorities are set.

   5. Run quit

      Exit from the drop profile view.

2. Applying the drop profile
   1. Run qos queue-profile queue-profile-name

      The queue profile view is displayed.

      The drop profile can be an existing drop profile or a new drop profile. You can set the scheduling mode, queue weight, queue length, and queue shaping in the queue profile.

   2. Run schedule wfq start-queue-index [ to end-queue-index ]

      WFQ is specified for the specified queue in the queue profile.

   3. Run queue { start-queue-index [ to end-queue-index ] } &<1-10> drop-profile drop-profile-name

      A drop profile is bound to a queue in a queue profile.

      By default, no queue is bound to a drop profile. All queues use tail drop.

   4. Run quit

      Exit from the queue profile view.

   5. Run interface interface-type interface-number[.subinterface-number ]

      The interface view or sub-interface view is displayed.

   6. Run qos queue-profile queue-profile-name

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