Filter
Top Products
Class of Service Configuration
3-123
3
Web – Click Priority, Traffic Classes. Mark an interface and click Select to display
the current mapping of CoS values to output queues. Assign priorities to the traffic
classes (i.e., output queues) for the selected interface, then click Apply.
Figure 3-73. Traffic Classes
CLI – The following example shows how to change the CoS assignments to a
one-to-one mapping.
* 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.
Selecting the Queue Mode
You can set the switch to service the queues based on a strict rule that requires all
traffic in a higher priority queue to be processed before lower priority queues are
serviced, or use Weighted Round-Robin (WRR) queuing that specifies a relative
weight of each queue. WRR uses a predefined relative weight for each queue that
determines the percentage of service time the switch services each queue before
moving on to the next queue. This prevents the head-of-line blocking that can occur
with strict priority queuing.
Console(config)#interface ethernet 1/1 4-104
Console(config-if)#queue cos-map 0 0 4-166
Console(config-if)#queue cos-map 1 1
Console(config-if)#queue cos-map 2 2
Console(config-if)#end
Console#show queue cos-map ethernet 1/1 4-168
Information of Eth 1/1
CoS Value : 0 1 2 3 4 5 6 7
Priority Queue: 0 1 2 1 2 2 3 3
Console#