Wrr-Queue Queue-Limit - Cisco Catalyst 3550 Command Reference Manual

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Chapter 2 Catalyst 3550 Switch Cisco IOS Commands

wrr-queue queue-limit

Use the wrr-queue queue-limit interface configuration command to configure the sizes of the egress

queues on Gigabit-capable Ethernet ports. Use the no form of this command to return to the default

Syntax Description

weight1 weight2

weight3 weight4

Weight1, weight2, weight3, and weight4 are 25 (1/4 of the buffer size is allocated to each queue).

Command Modes

Interface configuration

Command History

Usage Guidelines

The relative size differences in the numbers show the relative differences in the queue sizes.

On Gigabit-capable Ethernet ports, the total size of the queue can vary depending on the amount of RAM

in the switch.

When you enter this command, the queue is temporarily shut down during the hardware reconfiguration,

and the switch drops newly arrived packets to this queue.

This example shows how to configure the buffer size ratio of the four queues. The ratio of the buffer

allocated for each queue is 1/10, 1/5, 3/10 and 2/5 to queue 1, 2, 3, and 4. (Queue 4 is four times larger

than queue 1, twice as large as queue 2, and 1.33 times as large as queue 3.)

Switch(config)# interface gigabitethernet0/1

Switch(config-if)# wrr-queue queue-limit 1 2 3 4

You can verify your settings by entering the show mls qos interface buffers privileged EXEC command.

wrr-queue queue-limit weight1 weight2 weight3 weight4

no wrr-queue queue-limit

Ratio of weight1, weight2, weight3, and weight4 determines the ratio of the

sizes of the queues. Separate each value with a space. The weight range is 1

Modification

This command was introduced.

Catalyst 3550 Multilayer Switch Command Reference

wrr-queue queue-limit

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