Queueing And Scheduling On Egress Queues - Cisco Catalyst 3750-X Software Configuration Manual

Chapter 39 Configuring QoS

Queueing and Scheduling on Egress Queues

Figure 39-11
If the expedite queue is enabled, SRR services it until it is empty before servicing the other three queues.
Note
Figure 39-11
(DSCP or CoS value).
Determine egress queue
number and threshold
Queue the packet. Service
the queue according to
Rewrite DSCP and/or
OL-21521-01
and Figure 39-12
Queueing and Scheduling Flowchart for Egress Ports on Catalyst 3750-X Switches
Start
Receive packet from
the stack ring.
Read QoS label
based on the label.
Yes
Are thresholds
being exceeded?
No
the SRR weights.
CoS value as
appropriate.
Send the packet
out the port.
Done
show the queueing and scheduling flowcharts for egress ports.
Drop packet.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
Understanding QoS
39-19