QoS and Queueing
Hi all. I spent quite some time doing tests as part of another CBWFQ thread, and I want to post this to everyone. Although it’s around 25 pages long, a lot of it are pictures and tables. It should really shed light on how QoS works, and what we are actually QoSing. Some points there: - you can really see why we need QoS on LAN - you can see how max-reserved-bandwidth command does not have any influence on queueing - a glimpse of internal CBWFQ operation - class-default starvation, where even with a tiny reservation to another class will not let any traffic in class-default through (in older IOS)
Here is the link: http://www.boxoid.org/cisco/MAX-RESERVED-BANDWIDTH-AND-CBWFQ.pdf
— Pavel Bykov
Blogs and organic groups at http://www.ccie.net
























