Displaying Qos Information; Qos Configuration Examples - Cisco Catalyst 2950 Software Configuration Manual

Chapter 24 Configuring QoS

Displaying QoS Information

To display the current QoS information, use one or more of the privileged EXEC commands in
Table
Table 24-5 Commands for Displaying QoS Information
Command
show class-map [class-map-name]
show policy-map [policy-map-name [class class-name]]
show mls qos maps [cos-dscp | dscp-cos]
show mls qos interface [interface-id] [policers]
show mls masks [qos | security]
show wrr-queue cos-map
show wrr-queue bandwidth
1. Available only on a switch running the enhanced software image.
2. You can define up to 16 DSCP values for which byte or packet statistics are gathered by hardware by using the mls qos monitor {bytes | dscp dscp1 ...
dscp8 | packets} interface configuration command and the show mls qos interface statistics privileged EXEC command.
3. Access Control Parameters are called masks in the switch CLI commands and output.
This example shows how to display the DSCP-to-CoS maps:
Switch# show mls qos maps dscp-cos
Dscp-cos map:

QoS Configuration Examples

Note These examples are applicable only if your switch is running the enhanced software image.
This section provides a QoS migration path to help you quickly implement QoS features based on your
existing network and planned changes to your network, as shown in
information:
•
•
78-11380-04
24-5:
1
1
1
1
dscp: 0 8 10 16 18 24 26 32 34 40 46 48 56
-----------------------------------------------
cos: 0 1 1 2 2
QoS Configuration for the Common Wiring Closet, page 24-26
QoS Configuration for the Intelligent Wiring Closet, page 24-27
Purpose
Display QoS class maps, which define the match criteria to
classify traffic.
1
Display QoS policy maps, which define classification criteria for
incoming traffic.
Display QoS mapping information. Maps are used to generate an
internal DSCP value, which represents the priority of the traffic.
Display QoS information at the interface level, including the
configuration of the egress queues and the CoS-to-egress-queue
map, which interfaces have configured policers, and ingress and
egress statistics (including the number of bytes dropped).
Display details regarding the masks
ACLs.
Display the mapping of the CoS priority queues.
Display the WRR bandwidth allocation for the CoS priority
queues.
3 3 4 4 5 5 6 7
Catalyst 2950 Desktop Switch Software Configuration Guide
Displaying QoS Information
3
used for QoS and security
Figure 24-4. It contains this
2
24-25