Cisco ISE Software Configuration Guide - Page 63

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers How to Configure AToM VCs on the 4-Port ATM ISE Line Card See the "Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card" section on page 76 for more information on the output from these commands. Configuring Cell-Based Traffic Policing on AToM VCs Traffic policing is configured using the Modular QoS CLI. In order to configure traffic policing, you need to do the following: • Define a traffic class to classify the traffic (See the "Defining a Traffic Class" section on page 84 for more detailed information.) • Create a traffic policy with QoS features that determine how to treat classified traffic • Attach the traffic policy to a PVC For Layer 2 traffic, you can configure traffic policies that will guarantee a particular quality of service (QoS) traffic class. This is done using the police rate command in policy-map class configuration mode. The supported policing configurations are shown in Table 7. Table 7 Supported Policing Configurations Conformance Definition GCRA1 PCR Flow Action CBR CLP(0+1) Discard VBR.1 CLP(0+1) Discard VBR.2 CLP(0+1) Discard VBR.3 CLP(0+1) Discard UBR.1 CLP(0+1) Discard 1. GCRA=Generic Cell Rate Algorithm GCRA SCR Flow N/A CLP(0+1) CLP(0) CLP(0) N/A Action N/A Discard Discard Tagging N/A If single-bucket policing is used, there is a single policy definition using the rate and burst tolerance parameters. For a two-bucket policer, the rate and burst tolerance are taken from the parent policy, and the SCR and ATM maximum burst size (MBS) values are taken from the child policy. This section describes some of the most common tasks that are necessary to configure QoS traffic policing on AToM VCs. For more detailed information regarding MQC, see the "Configuring Modular QoS CLI" section on page 84. • Configuring CBR or UBR.1 Policing, page 64 • Configuring VBR.1 Policing, page 65 • Configuring VBR.2 Policing, page 67 • Configuring VBR.3 Policing, page 69 • Attaching a Service Policy to a PVC, page 72 • Troubleshooting Tips, page 73 Restrictions The following restrictions apply to policing on the 4-port ATM ISE line card: • The service-policy command must be used in l2transport mode. The EXP bit setting applies uniformly for CLP0 and CLP1 cells. Cisco IOS Release 12.0(27)S 63