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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 33 Configuring QoS
Configuring QoS
Use the no form of the appropriate command to delete an existing class map or remove a match criterion.
This example shows how to create access list 103 and configure the class map called class1. The class1
has one match criterion, which is access list 103. It permits traffic from any host to any destination that
matches a DSCP value of 10.
Switch(config)# access-list 103 permit any any dscp 10
Switch(config)# class-map class1
Switch(config-cmap)# match access-group 103
Switch(config-cmap)# exit
This example shows how to create a class map called class2, which matches incoming traffic with DSCP
values of 10, 11, and 12.
Switch(config)# class-map match-any class2
Switch(config-cmap)# match ip dscp 10 11 12
Switch(config-cmap)# exit
This example shows how to create a class map called class3, which matches incoming traffic with
IP-precedence values of 5, 6, and 7:
Switch(config)# class-map match-any class3
Switch(config-cmap)# match ip precedence 5 6 7
Switch(config-cmap)# exit
This example shows how to create a parent class-map called parent-class, which matches incoming
traffic with VLAN IDs in the range from 30 to 40.
Switch(config)# class-map match-any parent-class
Switch(config-cmap)# match vlan 30-40
Switch(config-cmap)# exit
Configuring Table Maps
You can configure table maps to manage a large number of traffic flows with a single command. You use
table maps to correlate specific DSCP, IP precedence and CoS values to each other, to mark down a
DSCP, IP precedence, or CoS value, or to assign default values. You can specify table maps in set
commands and use them as mark-down mapping for the policers.
These table maps are supported on the switch:
• DSCP to CoS, precedence, or DSCP
• CoS to DSCP, precedence, or CoS
• Precedence to CoS, DSCP, or precedence
Note these guidelines when configuring table maps:
• The switch supports a maximum of 256 unique table maps.
• The maximum number of map statements within a table map is 64.
• Table maps cannot be used in output policy maps.
Step 5
show class-map Verify your entries.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
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