Configuring QoS queues

By default the switches covered in this guide use eight queues. Change the default QoS queue configuration to four-queue mode or two-queue mode to increase the available buffering and bandwidth per queue.

Use the following commands to change the number of queues per port and display the current priority queue configuration on the switch.


qos queue-config {2-queues | 4-queues | 8-queues}

Configures the number of outbound priority queues for all ports on the switch using one of the following options: 2-queues, 4-queues, or 8-queues.

Default: 8-queues

The new configuration will:
  • Remove any previously configured bandwidth-min output settings

  • Set the new number of outbound port queuesIf you select anything but yes for this operation, the operation is aborted and a message stating Operation aborted appears.


This command will execute a write memory followed by an immediate reboot, replacing the Startup configuration with the content of the current Running configuration.