710CHAPTER 22: QUALITY OF SERVICE (QOS) AND RSVP

qos control define

3500

9000

9400

3900

9300

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Defines a control for one or more existing classifiers.

Valid Minimum Abbreviation

q co def

Important Considerations

A control can assign multiple rate limit values and an IEEE 802.1p priority tag value to the packets that are associated with one or more classifiers.

The system prompts you according to the rate limit type that you select. You can only use one rate limit type (none, receivePort, or aggregate) per control. For a type of receivePort or aggregate, you can specify multiple rate-limit values for groups of ports or individual ports. The aggregate rate limit type can only be applied to flow classifiers.

Loss-eligible packets are conforming packets that are discarded instead of queued when transmit queues back up beyond a threshold. You can specify whether conforming packets (as well as nonconforming excess packets) are loss eligible when you define the control. Marking packets loss eligible is useful for an intelligent discard of traffic in a congestion situation. Nonconforming excess packets are packets that exceed the specified rate limit.

With the QoS timer control, you can configure QoS control sessions with starting and ending times (similar to using a VCR).

Options

Prompt

Description

Possible Values

[Default]

 

 

 

 

Control

Number of the control.

5 – 50

1 (factory

number

Control numbers 1 – 4 are

? (for a list of

default)

 

 

 

predefined controls.

selectable

 

 

 

values)

 

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3Com 3500 manual Qos control define, Defines a control for one or more existing classifiers