Hi,
I am trying to modify the drop-tail queue so that the queue do not drops any
packets but when the queue maximum size is reached, it stops sending the
packet by stop creating further packets till there is some room available in
the queue. In a nutshell, I want to implement head-of-line blocking
mechanism without dropping any packets.
I would like to know if someone has implemented such a thing and if yes, is
it possible for them to share the code. If no, please suggest some ideas as
how should I go about implementing this queue.
All comments are highly appreciated.
Thanks,
- Faisal
On 5/5/06, Ilyes Gouta <[EMAIL PROTECTED]> wrote:
>
>
> Hi,
>
> Did you check the TCL binding in the C++ part? The new class should have
> a new binding, not the same one as declared for drop-tail.
>
> Regards,
> Ilyes Gouta.
>
> Eduardo J. Ortega wrote:
> > hi:
> >
> > Don't know if you received my last email, so I'll just write you
> again:
> >
> > I already have the OTCL binding in my newQueue.h file. My sims define
> the
> > queue like this:
> > $ns duplex-link $n1 $n2 1Mb 10ms DropTail (this works)
> > but when i try to use my queue then i do
> > $ns duplex-link $n0 $n2 1Mb 10ms newQueue
> > which doesn't work.
> >
> > I'm pretty sure this can't be a code problem, since I've copied and
> pasted
> > drop-tail.{cc,h} to newQueue.{cc,h}, changed classes names and
> recompiled but
> > still won't work. Can you think of anything else I might be doing wrong?
> > Thanks in advance.
> >
> > On Saturday 29 April 2006 16:06, you wrote:
> >> Hi,
> >>
> >> You have to create the necessary TCL binding within your new C++ code
> >> too. That binding will be used later by your simulation scripts.
> >>
> >> In the C++ part, you'll have to add a class like this:
> >>
> >> static class NewQueueClass : public TclClass
> >> {
> >> public:
> >> NewQueueClass () : TclClass("Queue/NewQueue") {}
> >> TclObject* create(int, const char*const*)
> >> {
> >> return (new NewQueue);
> >> }
> >> } class_new_queue;
> >>
> >> And then in the simulation script:
> >>
> >> $ns node-config \
> >> option1 \
> >> option2 \
> >> option3 \
> >> -ifqType Queue/NewQueue \
> >>
> >> This will tell NS to use your new queue for the newly created nodes.
> >>
> >> Hope it helps,
> >> Ilyes Gouta.
> >>
> >> On 4/29/06, Eduardo J. Ortega <[EMAIL PROTECTED]> wrote:
> >>> Hi:
> >>> I tried this, recompiled ok, but my sims won't run no matter what my
> code
> >>> is. i thought maybe my code was wrong, so i decided to copy
> >>> droptail.{cc,h} to fifo.{c,h}and change class names to FIFO, then add
> >>> fifo.o to makefile and recompiile. It compiled, but again, sims won't
> run
> >>> when i try to use fifo instead of droptail.
> >>>
> >>> Any clues?
> >>>
> >>> On Saturday 29 April 2006 11:11, you wrote:
> >>>> Hi,
> >>>>
> >>>> Have a look into the ~/ns-2.x/queue directory. You'll find all sorts
> >>>> of implementations for different active queues. This include RED,
> RIO,
> >>>> PRIO, JOBS, etc.
> >>>>
> >>>> Implementing a new queue is rather easy actually, you'll have to
> >>>> inherit from Queue and implement the enque() and deque() methods.
> This
> >>>> is really it! Don't forget to add you source code to NS's makefile to
> >>>> get it compiled.
> >>>>
> >>>> Regards,
> >>>> Ilyes Gouta.
> >>>>
> >>>> On 4/29/06, Eduardo J. Ortega <[EMAIL PROTECTED]> wrote:
> >>>>> hey there:
> >>>>>
> >>>>> anyone knows how to code new queue algorithms into NS? (for example,
> >>>>> choke)? Thanks.
> >>>>>
> >>>>> --
> >>>>> Eduardo J. Ortega - Linux user #222873
> >>>>> "No fake - I'm a big fan of konqueror, and I use it for everything."
> >>>>> -- Linus Torvalds
> >>> --
> >>> Eduardo J. Ortega - Linux user #222873
> >>> "No fake - I'm a big fan of konqueror, and I use it for everything."
> --
> >>> Linus Torvalds
> >
>
>
