H3C H3C S5100-SI, Руководство по эксплуатации, Страница: 425 / 830

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2) Configuring SDWRR queuing
Follow these steps to configure SDWRR queuing:
To do… Use the command… Remarks
Enter system view system-view —
For S5100-EI series switches:
queue-scheduler wrr { group1 { queue-id
queue-weight } &<1-8> | group2 { queue-id
queue-weight } &<1-8> }*
Configure SDWRR
queuing
For S5100-SI series switches:
queue-scheduler wrr { group1 { queue-id
queue-weight } &<1-4> | group2 { queue-id
queue-weight } &<1-4> }*
Required
By default, SP
queuing is used on
all the output
queues of a port.
The port of an S5100-SI series switch provides up to four output queues, while the port of
an S5100-EI series switch provides up to eight. You can configure SP queuing, SDWRR
queuing, or SP queuing in combination with SDWRR queuing on a port as required. Take an
S5100-EI series switch for example:
z
With SDWRR queuing adopted, the output queues of a port can be assigned to group
1 and group 2. The two groups are scheduled using the SP algorithm. For example, you
can assign queues 0 through 3 to group 1, and queues 4 through 7 to group 2. The
queues in group 2 are scheduled preferentially using WRR. The queues in group 1 are
scheduled using WRR only when all the queues in group 2 are empty.
z
With both SP queuing and SDWRR queuing adopted, groups are scheduled using the
SP algorithm. Assume that queue 0 and queue 1 are scheduled using SP queuing;
queues 2 through 4 are assigned to group 1; queues 5 through 7 are assigned to group
2. The queues in group 2 are scheduled preferentially using WRR. When all the queues
in group 2 are empty, the queues in group 1 are scheduled using WRR. Then, queue 1
is scheduled, and then queue 0.
When using SDWRR or SP+SDWRR for queue scheduling, you are recommended to assign
queues with successive queue numbers to the same scheduling group.
Configuration example
# Configure an S5100-EI series switch to use SP+SDWRR 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 group 2, with the weight of 20, 20,