Mls Qos Queue-Set Output Buffers - Cisco Catalyst 2960 Command Reference Manual

mls qos queue-set output buffers

mls qos queue-set output buffers
To use this command, the switch must be running the LAN Base image.
Note
Use the mls qos queue-set output buffers global configuration command to allocate buffers to a
queue-set (four egress queues per port). Use the no form of this command to return to the default setting.
Syntax Description qset-id
allocation1 ...
allocation4
Defaults All allocation values are equally mapped among the four queues (25, 25, 25, 25). Each queue has 1/4 of
the buffer space.
Command Modes Global configuration
Command History Release
12.2(25)FX
Usage Guidelines Specify four allocation values, and separate each with a space.
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.
To configure different classes of traffic with different characteristics, use this command with the mls qos
queue-set output qset-id threshold global configuration command.
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.
Examples This example shows how to map a port to queue-set 2. It allocates 40 percent of the buffer space to egress
queue 1 and 20 percent to egress queues 2, 3, and 4:
Switch(config)# mls qos queue-set output 2 buffers 40 20 20 20
Switch(config)# interface gigabitethernet0/1
Catalyst 2960 Switch Command Reference
2-218
mls qos queue-set output qset-id buffers allocation1 ... allocation4
no mls qos queue-set output qset-id buffers
ID of the queue-set. Each port belongs to a queue-set, which defines all the
characteristics of the four egress queues per port. The range is 1 to 2.
Buffer space allocation (percentage) for each queue (four values for queues 1 to 4).
For allocation1, allocation3, and allocation4, the range is 0 to 99. For allocation2,
the range is 1 to 100 (including the CPU buffer). Separate each value with a space.
Modification
This command was introduced.
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands
OL-8604-04