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Configuring QoS
Command
Step 5
queue-limit [cos value | dscp value | precedence
value | qos-group value] number-of-packets
[packets]}
Step 6
exit
Step 7
exit
Step 8
interface interface-id
Step 9
service-policy output policy-map-name
Step 10
end
Step 11
show policy-map [policy-map-name [class
class-map-name]]
Step 12
copy running-config startup-config
After you have created an output policy map, you attach it to an egress port. See the
Policy Maps" section on page
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.
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)# interface gigabitethernet0/1
Switch(config-if)# service-policy output gold-policy
Switch(config-if)# exit
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
30-54
Purpose
Specify the queue size for the traffic class.
•
(Optional) For cos value, specify a CoS value. The range is
from 0 to 7.
•
(Optional) For dscp value, specify a DSCP value. The range
is from 0 to 63.
•
(Optional) For precedence value, specify an IP precedence
value. The range is from 0 to 7.
•
(Optional) For qos-group value, enter a QoS group value.
The range is from 0 to 15.
•
For number-of-packets, set the minimum threshold for WTD.
The range is from 16 to 272, in multiples of 16, where each
packet it a fixed unit of 256 bytes. The value is specified in
packets by default, but the packets keyword is optional.
Return to policy-map configuration mode.
Return to global configuration mode.
Enter interface configuration mode for the interface to which you
want to attach the policy.
Attach the policy map (created in Step 2) to the egress interface.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
30-43.
Chapter 30
Configuring QoS
"Configuring Output
78-17058-01
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