Cisco IE 4000, Software Configuration Manual

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Configuring QoS
Configuring QoS
After you have created an output policy map, you attach it to an egress port. See Attaching a Traffic Policy to an Interface,
page 609 .
Use the no form of the appropriate command to delete an existing policy map or class map or to delete a class-based
shaping configuration.
Configuring Output Policy Maps with Port Shaping
Port shaping is applied to all traffic leaving an interface. It uses a policy map with only class default when the maximum
bandwidth for the port is specified by using the
shape average command. A child policy can be attached to the
class-default in a hierarchical policy map format to specify class-based actions for the queues on the shaped port.
The total of the minimum bandwidth guarantees (CIR) for each queue of the child policy cannot exceed the total port
shape rate.
Beginning in privileged EXEC mode, follow these steps to use port shaping to configure the maximum permitted average
rate for a class of traffic:
Command Purpose
1. configure terminal Enter global configuration mode.
2. policy-map policy-map-name Create a policy map by entering the policy map name, and enter
policy-map configuration mode.
3. class { class-map-name | class-default } Enter a child class-map name or class-default to match all
unclassified packets, and enter policy-map class configuration
mode.
4. shape average target bps Specify the average class-based shaping rate.
For target bps , specify the average bit rate in bits per second. The
range is from 64000 to 1000000000.
5. exit Return to policy-map configuration mode.
6. exit Return to global configuration mode.
7. interface interface-id Enter interface configuration mode for the interface to which you
want to attach the policy.
8. service-policy output policy-map-name Attach the policy map (created in Step 2) to the egress interface.
9. end Return to privileged EXEC mode.
10. show policy-map [ policy-map-name [ class
class-map-name ]]
Verify your entries.
11. copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
1. configure terminal Enter global configuration mode.
2. policy-map policy-map-name Create a hierarchical policy map by entering the hierarchical
policy map name, and enter policy-map configuration mode for
the parent policy.
3. class class-default Enter a policy-map class configuration mode for the default class.
4. shape average target bps Specify the average class-based shaping rate.
For target bps , specify the average bit rate in bits per second. The
range is from 4000000 to 1000000000.