From: Joerg Kohlenz (j.kohlenz@xxxxxxxxxxxxxx)
Date: Tue Jul 02 2002 - 16:51:36 GMT-3
hi,
car is a mechanism that you can use to limit bandwidth on interface basis,
not as a queueing mechanism. car did nor realy allocate the bandwith, it
rather limits the physical bandwidth and drops (or other defined) f.e. based
on mpls experimental, ip precedence ...
cbwfq (like weighted fair queueing) is a congestion mechansim that you use
for queueing for f.e. ip-qos or mpls-qos features. it is important when you
want to tune different qos services classes before they are indeed queued by
wred, red, dwred or flow-based wred ...
so maybe you can think about car is an instance that will come after you do
cbwfq. that means that maybe with cbwfq and wred packets are already dropped
before they come to car mechansims.
hmmm... hope that helps :-)
-----Urspr|ngliche Nachricht-----
Von: nobody@groupstudy.com [mailto:nobody@groupstudy.com]Im Auftrag von
Ted Richmond
Gesendet am: Dienstag, 2. Juli 2002 08:52
An: ccielab@groupstudy.com
Betreff: CAR vs CBWFQ
I am totally confused now!!!
Can someone tell me when to use CAR / CBWFQ. Looks
like both can be used to allocate bandwidth to
different connections.
Thanks.
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