Cisco IE-3000-8TC Software Configuration Manual page 722

Configuring Standard QoS
Each threshold value is a percentage of the queues allocated buffers, which you specify by using the mls
qos queue-set output qset-id buffers allocation1 ... allocation4 global configuration command. The
queues use WTD to support distinct drop percentages for different traffic classes.
Note The egress queue default settings are suitable for most situations. You should change them only when
you have a thorough understanding of the egress queues and if these settings do not meet your QoS
solution.
Beginning in privileged EXEC mode, follow these steps to configure the memory allocation and to drop
thresholds for a queue-set. This procedure is optional.
Command
Step 1
configure terminal
Step 2 mls qos queue-set output qset-id
buffers allocation1 ... allocation4
Cisco IE 3000 Switch Software Configuration Guide
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Purpose
Enter global configuration mode.
Allocate buffers to a queue-set.
By default, all allocation values are equally mapped among the four
queues (25, 25, 25, 25). Each queue has 1/4 of the buffer space.
For qset-id, enter the ID of the queue-set. The range is 1 to 2. Each
•
port belongs to a queue-set, which defines all the characteristics of
the four egress queues per port.
• For allocation1 ... allocation4, specify four percentages, one for each
queue in the queue-set. For allocation1, allocation3, and allocation4,
the range is 0 to 99. For allocation2, the range is 1 to 100 (including
the CPU buffer).
Allocate buffers according to the importance of the traffic; for example,
give a large percentage of the buffer to the queue with the highest-priority
traffic.
Chapter 36 Configuring QoS
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