On Wednesday 04 April 2007 13:13, Christian Benvenuti wrote: > Hi Alejandro Hi Christian! > It is not mandatory to attach a HTB qdisc to the root. You can attach > it to any classfull qdisc's cass. Yes, I know. I was trying to ask why to attach htb qdisc instead of htb class to the root. In fact, I really don't understand what means "htb qdisc" since I just know htb as a classfull tc node, and (I guess) qdisc are classless tc nodes (am I wrong?) > You can only create HTB classes under a HTB qdisc, and you can only > create CBQ classes under a CBQ class. However you can attach any > qdisc to a given class. > What is exactly that you find strange? Well, I thought I just could attach qdisc nodes to class nodes, not viceversa, and that's the case when attaching htb qdisc to the root and then, declaring a child of the root as a htb class, doesn't it? > Correct. > To be exact, most qdiscs use Packet FIFO (pfifo) by default, but that's > not a rule (there are exceptions). Haha, well, that's why rules are for: to break them with exceptions ;) ...just kidding, of course! > The default pFIFO qdisc that get attached to the classes are not > shown by the above command. ...and which is the command that will show them?? > I would say that that is a misconfiguration. > Neither the tc command nor the kernel gives you any warning. > You could implement it as part of your project ... :) I agree with you: it is a wrong configuration, and I need to deal with it as part of my project. But I am able to run those lines, and I will get a behavior, and I want to know if there is some kind of logic around it: ...how it works?? > You are right. Class 1:20 does not limit the class 1:21's rate to 1kbit. > This is due to the way the kernel schedules the HTB classes. Could you (please) tell me more about how the kernel do this? > Note that since you did not use the "ceil" config option, class 1:21 > gets by default "ceil" = "rate" = 10mbit, and therefore it can not > borrow from its parent 1:20. > There would be nothing to borrow anyway, since 1:20 is limited to > 1kbit (rate=cel=1kbit). > > Regards > /Christian > [http://benve.info] Thank you very much!! -- Alejandro Ramos Encinosa <alex@xxxxx> Fac. Matemática Computación Universidad de La Habana _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
