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Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 33 Configuring QoS
Understanding QoS
Queueing and Scheduling on Ingress Queues
Note Catalyst 2960-S switches do not support ingress queueing.
Figure 33-7 shows the queueing and scheduling flowchart for ingress ports.
Figure 33-7 Queueing and Scheduling Flowchart for Ingress Ports
Note SRR services the priority queue for its configured share before servicing the other queue.
90564
Read QoS label
(DSCP or CoS value).
Determine ingress queue
number, buffer allocation,
and WTD thresholds.
Are thresholds
being exceeded?
Queue the packet. Service
the queue according to
the SRR weights.
Send packet to
the internal ring.
Drop packet.
Start
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