The workflow for car, Car policy configuration, Per interface rate control (pirc) support – Cisco 12000/10700 V3.1.1 User Manual

Page 292

Advertising
background image

11-6

Cisco 12000/10700 v3.1.1 Router Manager User Guide

OL-4455-01

Chapter 11 Layer 3 QoS

The Workflow for CAR

The Workflow for CAR

To begin working with CAR objects, proceed as follows:

Step 1

Create and configure a CAR policy.

Step 2

Create and configure an access list (optional).

Step 3

Apply one or more access lists to the CAR policy.

Step 4

Apply the created CAR policy to one or multiple interfaces.

At any given time, you also have the option to edit or delete CAR policies (which are not applied),
change the association of CAR policies, or view the status of CAR policies on any interface.

CAR Policy Configuration

CAR policies can rate limit traffic based on certain matching criteria, such as incoming interface, IP
Precedence, or IP access list. You configure the actions CAR will take when traffic conforms to or
exceeds the rate limit. You can set CAR policies that are associated with one of the following:

All IP traffic

IP precedence

MAC address

IP access list, both standard and extended. Matching to IP access lists is more processor-intensive
than matching based on other criteria.

Each interface can have only one CAR policy applied.

The CAR Policies section covers the following areas:

Creating a CAR Policy

Applying an Access List to a CAR Policy

CAR Policy Configuration Window—Detailed Description

Per Interface Rate Control (PIRC) Support

From the operator’s perspective, the same workflows used for CAR will be available for the creation,
application and maintenance of PIRC Policies. Specifically, the following functions are applicable to
PIRC:

Incoming only (Rx direction)

Only one rule is allowed in a PIRC statement

Available conform-actions are:

drop

set-prec-transmit

transmit

No access-group matching is available in Cisco 12000/10720 Router Manager

Advertising