June 2003
Intermediate to advanced
432 pages
15h 56m
English
book
Cisco Catalyst QoS: Quality of Service in Campus Networks
by Mike Flannagan - CCIE® No. 7651, Richard Froom - CCIE No. 5102, Kevin Turek - CCIE No. 7284
Content preview from Cisco Catalyst QoS: Quality of Service in Campus Networks
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46 Chapter 2: End-to-End QoS: Quality of Service at Layer 3 and Layer 2
that, if the CAC mechanism failed, policing would police the aggregate of the video
traffic, which would likely impact video quality. Although poor video quality is not
ideal, other network traffic would be protected.
As mentioned earlier, Cisco IOS has two main mechanisms for policing. CAR is a legacy
mechanism and, although a lot of networks use CAR today, future development efforts will
be put into class-based policer. Class-based policer was originally released to correspond
to RFC 2697, which defines a single-rate three-color policer. The rate that is defined is the
rate ...
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