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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 33 Configuring QoS
Configuring QoS
After you have created an output policy map, you attach it to an egress port. See the “Configuring Output
Policy Maps” section on page 33-51.
Use the no form of the appropriate command to delete an existing policy map or class map or to delete
a WTD configuration.
This example shows a policy map with a specified bandwidth and queue size. Traffic that is not DSCP
30 or 10 is assigned a queue limit of 112 packets. Traffic with a DSCP value of 30 is assigned a
queue-limit of 48 packets, and traffic with a DSCP value of 10 is assigned a queue limit of 32 packets.
All traffic not belonging to the class traffic is classified into class-default, which is configured with
10
percent of the total available bandwidth and a large queue size of 256 packets.
Switch(config)# policy-map gold-policy
Switch(config-pmap)# class traffic
Switch(config-pmap-c)# bandwidth percent 50
Switch(config-pmap-c)# queue-limit 112
Switch(config-pmap-c)# queue-limit dscp 30 48
Switch(config-pmap-c)# queue-limit dscp 10 32
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config-pmap)# class class-default
Switch(config-pmap-c)# bandwidth percent 10
Switch(config-pmap-c)# queue-limit 256
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# service-policy output gold-policy
Switch(config-if)# exit
Step 8
interface interface-id Enter interface configuration mode for the interface to which you
want to attach the policy.
Step 9
service-policy output policy-map-name Attach the policy map (created in Step 2) to the egress interface.
Note If you try to attach an output policy map that contains a
fourth queue-limit configuration, you see an error
message, and the attachment is not allowed.
Step 10
end Return to privileged EXEC mode.
Step 11
show policy-map [policy-map-name [class
class-map-name]]
Verify your entries.
Step 12
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose