Cisco Cisco IOS Software Release 12.2(27)SBC

QoS: Percentage-Based Shaping

How to Configure QoS: Percentage-Based Shaping

Cisco IOS Release: Multiple releases (see the Feature History table)

DETAILED STEPS

Attaching the Policy Map to an Interface

After a policy map is created, the next step is to attach the policy map to an interface. Policy maps can
be attached to either the input or output direction of the interface.

Note

Depending on the needs of your network, you may need to attach the policy map to a subinterface, an
ATM PVC, a Frame Relay DLCI, or other type of interface.

To attach the policy map to an interface, perform the following steps.

Command or Action

Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

•

Enter your password if prompted.

Step 2

configure

terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

policy-map

policy-name

Example:

Router(config)# policy-map policy1

Specifies the name of the policy map to be created.
Enters policy-map configuration mode.

•

Enter policy map name.

Step 4

class

{class-name

class-default}

Example:

Router(config-pmap)# class class1

Specifies the class so that you can configure or
modify its policy. Enters policy-map class
configuration mode.

•

Enter the class name or specify the default
class (class-default).

Step 5

shape

{average | peak} percent percentage

[sustained-burst-in-msec ms] [be excess-burst-in-msec

] [bc committed-burst-in-msec ms]

Example:

Router(config-pmap-c)# shape average percent 25 20 ms

be 300 ms bc 400 ms

Configures either average or peak rate traffic
shaping on the basis of the specified bandwidth
percentage and the optional burst sizes.

•

Enter the bandwidth percentage and optional
burst sizes.

Step 6

exit

Example:

Router(config-pmap-c)# exit

Exits policy-map class configuration mode.