100CHAPTER 7: QUALITY OF SERVICE (QOS)

The next sections describe how QoS profiles are used and modified. After this, various traffic groupings are explained and QoS profiles are assigned to the traffic groupings.

QoS Profiles

Eight default QoS profiles are provided that can be modified, but not

 

deleted. The default QoS profile names are as follows:

 

■

qp1

 

■

qp2

 

■

qp3

 

■

qp4

 

■

qp5

 

■

qp6

 

■

qp7

 

■

qp8

 

The parameters that make up a QoS profile include the following:

 

■ Minimum bandwidth — The minimum percentage of link

 

 

bandwidth that the traffic requires. The system is required to provide

 

 

the minimum amount of bandwidth to the traffic. The lowest possible

 

 

value is 0%.

 

■ Maximum bandwidth — The maximum percentage of link

 

 

bandwidth that the traffic is permitted to use.

 

■ Priority — The level of priority used by the switch to service traffic.

 

 

Choices include:

 

 

■

Low

 

 

■

LowHi

 

 

■

Normal

 

 

■

NormalHi

 

 

■

Medium

 

 

■

MediumHi

 

 

■

High

 

 

■

HighHi

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3Com 9100 manual QoS Profiles