Quick Reference Guide

330 | Quality of Service (QoS) Commands
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cos-queue max-bandwidth
This command specifies the maximum transmission bandwidth limit for each interface queue. Also
known as rate shaping, this has the effect of smoothing temporary traffic bursts over time so that the
transmitted traffic rate is bounded. The total number of queues supported per interface is platform
specific.
Syntax
Oen6HWEWEu, G6r o.Aa.Ciu<bw-0> <bw-1> … <bw-n>
Modes
Global Config and Interface Config
no cos-queue max-bandwidth
This command restores the default for each queue's maximum bandwidth value.
Syntax
no cos-queue max-bandwidth
Mode
Global Config and Interface Config
cos-queue min-bandwidth
This command specifies the minimum transmission bandwidth guarantee for each interface queue.
Syntax
cos-queue min-bandwidth bw-0 bw-1 … bw-n
The no cos-queue min-bandwidth command restores the default for each queue's minimum
bandwidth value.
A value from 0-100 (percentage of link rate) must be specified for each queue, with 0, for example,
indicating no guaranteed minimum bandwidth. The sum of all values entered must not exceed 100.
Command
History
Modes
Global Config; Interface Config; Interface Port Channel Config
cos-queue random-detect
This command activates weighted random early discard (WRED) for each specified queue on the
interface. Specific WRED parameters are configured using the 'random-detect queue-parms' and the
'random-detect exponential-weighting-constant' commands.
The no version of this command disables WRED, thereby restoring the default tail drop operation for
the specified queues on the interface.
Syntax
[no] cos-queue random-detect <queue-id-1> [<queue-id-2> … <queue-id-n>]
Modes
Global Config and Interface Config
Version 2.5.1 Interface Port Channel Config mode added