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24-3
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 24 Configuring Rate Limiting and Traffic Shaping
Traffic Shaping
Features
Traffic shaping on the Catalyst 8500 switch router includes the following features:
• 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
• Per-physical port traffic shaping
• Back pressure and traffic queues
• Egress traffic traffic shaping
Restrictions
Restrictions for traffic shaping on the Catalyst 8500 switch router include the following:
• This feature is not supported on the LightStream 1010.
• IPX and traffic shaping cannot be configured at the same time. If traffic shaping is configured on an
interface, IPX will be automatically disabled on that interface. In addition, IPX will be automatically
disabled on any of the three other interfaces which are controlled by same hardware micro-controller
as the configured interface. For example, if traffic shaping is configured on Fast Ethernet slot 0, IPX
will not work on slots 0, 1, 2, and 3.
• The QoS mapping ratio might be disrupted by the rate limiting configuration.
• This feature is not available for ingress traffic.
Configuring Traffic Shaping
Enter the following command in interface configuration mode to configure traffic shaping on your switch
router:
Command Purpose
traffic-shape rate {target-bit-rate | bit per
interval }
Configures traffic shaping on a port.