Cisco Catalyst 2960 Series User Manual

PurposeCommand or Action
•
For cos1...cos8, enter up to eight values, and separate each value with a space.
The range is 0 to 7.
To return to the default DSCP output queue threshold map or the default
CoS output queue threshold map, use the no mls qos srr-queue output
dscp-map or the no mls qos srr-queue output cos-map global
configuration command.
Note
Returns to privileged EXEC mode.end
Example:
Switch(config)# end
Step 3
Verifies your entries.show mls qos maps
Step 4
Example:
Switch# show mls qos maps
The DSCP output queue threshold map appears as a matrix. The d1 column specifies
the most-significant digit of the DSCP number; the d2 row specifies the
least-significant digit in the DSCP number. The intersection of the d1 and the d2
values provides the queue ID and threshold ID; for example, queue 2 and threshold
1 (02-01).
The CoS output queue threshold map shows the CoS value in the top row and the
corresponding queue ID and threshold ID in the second row; for example, queue
2 and threshold 2 (2-2).
(Optional) Saves your entries in the configuration file.copy running-config startup-config
Step 5
Example:
Switch# copy-running-config
To return to the default DSCP output queue threshold map or the default CoS output
queue threshold map, use the no mls qos srr-queue output dscp-map or the no
mls qos srr-queue output cos-map global configuration command.
startup-config
Related Topics
Queueing and Scheduling on Egress Queues
Examples: Configuring Egress Queue Characteristics, on page 640
Weighted Tail Drop, on page 554
Configuring SRR Shaped Weights on Egress Queues
You can specify how much of the available bandwidth is allocated to each queue. The ratio of the weights is
the ratio of frequency in which the SRR scheduler sends packets from each queue.
You can configure the egress queues for shaped or shared weights, or both. Use shaping to smooth bursty
traffic or to provide a smoother output over time.
Beginning in privileged EXEC mode, follow these steps to assign the shaped weights and to enable bandwidth
shaping on the four egress queues mapped to a port. This procedure is optional.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
623
How to Configure QoS

Cisco Catalyst 2960 Series Specifications

General

Layer	Layer 2
Power over Ethernet (PoE)	Available on some models
RAM	128 MB
Flash Memory	32 MB
MAC Address Table Size	8000
Operating Temperature	0°C to 45°C (32 to 113°F)
Ports	24 or 48 x 10/100/1000