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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Congestion Management and Avoidance 175
Congestion Management and Avoidance
After the switch classifies, marks, and polices a packet against QoS rules, the switch queues
the packet into a transmit queue for output scheduling. Placing the packet into one of
multiple queues allows for the switch to differentiate service by transmitting packets from
the queue with specific order and priority. The Catalyst 3550 Family of switches utilizes
WRED and tail-drop queuing mechanisms for congestion avoidance; the Catalyst 2950
Family of switches does not support congestion avoidance. Both the Catalyst 2950 Family
and 3550 Family of switches support four transmit ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.