When congestion occurs on a network, queue scheduling solves
the resource preemption problem among multiple packets.
Context
- Congestion management technology prevents intermittent congestion
on networks by using queue scheduling technologies.
- Queue scheduling technologies include PQ scheduling, DRR scheduling
and WRR scheduling.
Procedure
- Choose in the navigation tree to open the Configure
Scheduling page.
Table 1 describes the parameters
on the Configure Scheduling page.
Table 1 Configure Scheduling
Parameter
|
Description
|
Select Interface
|
Indicates the interface where scheduling needs to be configured.
You can select multiple interfaces.
|
Queues
|
Indicates the queue where scheduling needs to be configured.
|
Scheduling Mode
|
Indicates the queue scheduling mode, including: - PQ
In PQ mode, the switch schedules packets based on priorities of queues in a strict manner.
The weight is not used in this mode.
- DRR
In RR mode, the switch schedules packets circularly based on priorities of queues. Based
on RR scheduling, DRR scheduling is used to schedule packet flows
of all the queues according to the maximum bandwidth assigned by the switch to the queues.
- WRR
Based on RR scheduling, WRR scheduling is used to schedule
packet flows based on weights of queues.
The default value is wrr.
|
Weight
|
Indicates the weight used to schedule packet flows in queues.
|
- Select the interfaces that you want to configure.
- Set the scheduling mode and weight for the queue.
- Click Apply to complete the configuration.
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