CHAPTER
24-1
ATM Switch Router Software Configuration Guide
OL-7396-01
24
Configuring Rate Limiting and Traffic Shaping
This chapter describes rate limiting features and configuration proce dures for your Catalyst 8500 switch
router.
Note For further information about the commands used in this chapter, refer to the ATM and Layer 3 Switch
Router Command Reference and the Cisco IOS Quality of Service Solutions Command Reference.
This chapter includes the following sections:
Rate Limiting, page 24-1
Traffic Shaping, page 24-2
Displaying the Configurations, page 24-4

Rate Limiting

Rate limiting is available on the Catalyst 8540 MSR, Catalyst 8510 MSR, Catalyst 8540 CSR, and
Catalyst 8510 CSR. This feature is similar to the IOS committed access rate (CAR) feature. You can
deploy rate limiting on your switch router to ensure that a packet, or data source, a dheres to a stipulated
contract, and to determine the QoS for a packet.
Rate limiting can be applied to individual interfaces. When an interface is configured with this feature,
the traffic rate will be monitored by the Ethernet processor interface ucode to verify conformity.
Non-conforming traffic is dropped, conforming traffic passes through without a ny changes.

Features Supported

The following features are supported for rate limiting on the Catalyst 8500 switch router:
This feature is supported on the following interface modules:
Eight-Port 10/100BASE-T Fast Ethernet Interface Modules
16-Port 10/100BASE-T Fast Ethernet Interface Modules
Eight-Port 100BASE-FX Fast Ethernet Interface Modules
16-port 100BASE-FX Fast Ethernet Interface Modules
This feature can be applied on a per-physical-port basis.
This feature is available for input traffic and output traffic.