H3C Technologies H3C WX3000 Series Unified Switches - Manual (Page 370)

37-26
To do… Use the command… Remarks
Enter system view system-view —
Configure SDWRR queue
scheduling algorithm
queue-scheduler wrr { group1
{ queue-id queue-weight } &<1-8> |
group2
{ queue-id queue-weight }
&<1-8> }*
Required
By default, SP queue scheduling
algorithm is adopted on all the output
queues of a port.
A port on a device can accommodate up to eight output queues. You can configure to use SP queue
scheduling algorithm, SDWRR queue scheduling algorithm, or combine the two as required.
z
With SDWRR queue scheduling algorithm adopted, the output queues of a port can be assigned to
group 1 and group 2. The two groups are scheduled using SP algorithm. For example, you can
assign queue 0, queue 1, queue 2, and queue 3 to group 1, and assign queue 4, queue 5, queue 6,
and queue 7 to group 2. The queues in group 2 are scheduled preferentially using WRR queue
scheduling algorithm. Queues in group 1 are scheduled using WRR queue scheduling algorithm
only when all the queues in group 2 are empty.
z
With both SP and SDWRR queue scheduling algorithms adopted, groups are scheduled using SP
algorithm. Assume that queue 0 and queue 1 are scheduled using SP algorithm; queue 2, queue 3,
and queue 4 are assigned to group 1; queue 5, queue 6, and queue 7 are assigned to group 2. The
queues in group 2 are scheduled preferentially using WRR queue scheduling algorithm. When all
the queues in group 2 are empty, queues in group 1 are scheduled using WRR queue scheduling
algorithm. Then, queue 1 is scheduled, and then queue 0.
When using SDWRR or SP+SDWRR combination for queue scheduling, you are recommended to
assign queues with successive queue numbers to the same scheduling group.
Configuration example
# Configure a device to adopt SP+SDWRR combination for queue scheduling, assigning queue 3,
queue 4, and queue 5 to WRR scheduling group 1, with the weigh of 20, 20 and 30; assigning queue 0,
queue 1, and queue 2 to WRR scheduling group 2, with the weight 20, 20, and 40; using SP for
scheduling queue 6 and queue 7. Display the configuration information after configuration.
Configuration procedure:
<device> system-view
[device] queue-scheduler wrr group1 3 20 4 20 5 30 group2 0 20 1 20 2 40
[device] display queue-scheduler
QID: scheduling-group weight
-----------------------------------
0 : wrr , group2 20
1 : wrr , group2 20
2 : wrr , group2 40
3 : wrr , group1 20
4 : wrr , group1 20
5 : wrr , group1 30