SMC Networks SMC6724L3 manual Setting the Service Weight for Traffic Classes, 124

CONFIGURING THE SWITCH

CLI – The following example shows how to map CoS values 0, 1 and 2 to priority queue 0, value 3 to priority queue 1, values 4 and 5 to priority queue 2, and values 6 and 7 to priority queue 3.

Console(config)#interface ethernet 1/1			4-119
Console(config)#queue cos-map 0 0 1 2			4-184
Console(config)#queue cos-map 1 3
Console(config)#queue cos-map 2 4 5
Console(config)#queue cos-map 3 6 7
Console(config)#exit
Console#show queue cos-map ethernet 1/1			4-186
Information of Eth 1/1
Queue ID	Traffic class
--------	-------------
0	0	1 2
1	3
2	4	5
3	6	7
Console#

*Mapping specific values for CoS priorities is implemented as an interface configuration command, but any changes will apply to the all interfaces on the switch.

Setting the Service Weight for Traffic Classes

This switch uses the Weighted Round Robin (WRR) algorithm to determine the frequency at which it services each priority queue. As described in “Mapping CoS Values to Egress Queues” on page 3-122,the traffic classes are mapped to one of the four egress queues provided for each port. You can assign a weight to each of these queues (and thereby to the corresponding traffic priorities). This weight sets the frequency at which each queue will be polled for service, and subsequently affects the response time for software applications assigned a specific priority value.

Command Attributes

•WRR Setting Table* – Displays a list of weights for each traffic class (i.e., queue).

•Weight Value – Set a new weight for the selected traffic class. (Range: 1-255)

* CLI shows Queue ID.

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