From: Pavel Bykov (slidersv@gmail.com)
Date: Sun Dec 07 2008 - 03:07:45 ARST
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 BykovBlogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Thu Jan 01 2009 - 12:53:07 ARST