Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 142)

128 Multi-Service IronWare QoS and Traffic Management Configuration Guide
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Scheduling traffic for forwarding
4
To determine the weight of q3, use the following formula.
The weight of q3 is 11.4%. Consequently, q3 will get 11.4% of the port’s total bandwidth.
The values of the remaining queues are calculated to be the following: q7 = 20.5%, q6 = 18.2%, q5
= 15.9%, q4 = 13.6%, q3 = 11.4%, q2 = 9.1%, q1 = 6.8%, and q0 = 4.5%
Configuring WFQ weight-based traffic scheduling
To configure WFQ weight-based scheduling use a command such as the following.
Brocade(config)# interface ethernet 1/1
Brocade(config-if-e1000-1/1)# qos scheduler weighted 5 10 15 20 30 15 5 10
Syntax: qos scheduler weighted queue7-weight queue6-weight queue5-weight queue4-weight
queue3-weight queue2-weight queue1-weight queue0-weight
The queue7-weight variable defines the relative value for queue7 in calculating queue7’s allocated
bandwidth.
The queue6-weight variable defines the relative value for queue6 in calculating queue6’s allocated
bandwidth.
The queue5-weight variable defines the relative value for queue5 in calculating queue5’s allocated
bandwidth.
The queue4-weight variable defines the relative value for queue4 in calculating queue4’s allocated
bandwidth.
The queue3-weight variable defines the relative value for queue3 in calculating queue3’s allocated
bandwidth.
The queue2-weight variable defines the relative value for queue2 in calculating queue2’s allocated
bandwidth.
The queue1-weight variable defines the relative value for queue1 in calculating queue1’s allocated
bandwidth.
The queue0-weight variable defines the relative value for queue0 in calculating queue0’s allocated
bandwidth
The acceptable range for queuex-weight variables is 1-128.
Refer to “Calculating the values for WFQ Weight-based traffic scheduling” for information on
assigning queue0-weight to queue7-weight values.
Configuring mixed strict priority and weight-based scheduling
When configuring the mixed strict priority and weight-based scheduling option, queues 5 - 7 are
allocated to strict priority-based scheduling and queues 0 - 4 are allocated to weight-based
scheduling.
To configure mixed priority and weight-based scheduling use a command such as the following.
25
Weight of q3 = -----------------------------------------
10 + 15 + 20 + 25 + 30 + 35 + 40 + 45