
44 Chapter 2: End-to-End QoS: Quality of Service at Layer 3 and Layer 2
All Catalyst switches that support policing utilize the token bucket algorithm for
bandwidth-limiting traffic flows. Chapters 6, 7, and 8 discuss the token bucket algorithm
for the Catalyst 2950 and 3550, 4000 IOS, and 6500 Family of switches, respectively.
Traffic Shaping
Cisco devices utilize various types of traffic shaping, but this section is intended only to
introduce the general concept of traffic shaping, not the specific implementations. For infor-
mation about implementation on Cisco platforms, refer to Cisco.com.
The purpose of traffic shaping is to control the rate at which ...