From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stef Coene Date: Wed, 29 Oct 2003 18:41:37 +0000 Subject: Re: [LARTC] Explanation reqd. for few (more than few!) concepts in TC Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org On Wednesday 29 October 2003 15:23, Suraj Shankar wrote: > IMHO, classification is done by the filter within a > classful qdisc; but, I was wondering why call a class > inside a qdisc a class, why not call it a sub-qdisc, > there must be something more to a class-vs-qdisc. A qdisc is a queueing discipline : it's a queue for packets. A class is something virtual that hold some packets from that queue. > > Since HTB takes bandwidth as parameters, to really > > have any effect > > you'll have to know how much bandwidth preciselly > > you have. Like if you > > have 128kbps ISDN, you must set HTB classes so that > > cumulative rates of > > the classes are not bigger that your real limit. If > > not the shapping > > will not be correct and precise. > > okey, so ideally for a bandwidth that varies (by few > bytes) cbq is the best available? No, you will have the same problem with cbq :( Stef -- stef.coene@docum.org "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.openprojects.net _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/