Re: [ns] Documentation on CBQLink and CBQ Objects

[Titus Awotula <T.A.Awotula1@lboro.ac.uk>]

Thanks Carlos,
Can I use Tcl procedure to implement CBQ as object of the node rather than
it being an object of Link. I mean without changing the base C/C++ code.
 
At 10:46 22/11/00 -0300, you wrote:
>> Hi Carlos,
>> Thanks very much for your prompt reply.
>> Yet again, I have two straight forward questions whose answers are dicey in
>> my mind just now;
>> (1) If I have a link between n0 and n1 with CBQ,
>>       n0---------n1
>> Where is the CBQ implemented, is it at the output of n0 or at the imput
of n1?
>
>At the link between n0 and n1 (that represents the output of n0)
>
>> (2) If cbqlink is not implemented between n0 and n1, can one still
implement 
>> CBQ in the link?
>
>As CBQ is implemented at the link, there is no another way of implementing
>it.
>
>Carlos
>
>> 
>> At 14:53 13/11/00 -0300, you wrote:
>> >> I want packets from n0 and n1 to be queued in different queues at n2
before
>> >> being forwarded to n3. Since NS do not implement CBQ as object of the
node,
>> >> I have problem in  managing CBQ in n2. The question is, for me to
implement
>> >> multiple Queue in n2 only, must I install cbqlink in the 3 links?
Does NS
>> >> allow you to define a procedure that enable you to install multiple
queues
>> >> in a node?
>> >
>> >NS implements queues within link objects. So, in order to get the effect
>> >of having multiple queues in node n2, you just need to set a CBQ link
>> >between nodes n2 and n3.
>> >
>> >> I have the ./ns test-suite-cbq.tcl. The script confuse me in terms of
how
>> >> the events are related to the topology or nodes for the simulation.
>> >
>> >Take a look in the following simple script:
>> >http://www.cin.ufpe.br/~cak/ns/cbq_example.tcl
>> >
>> >> 
>> >> I also have problem with implementation of CBQ using TCP as transport
>> agent.
>> >
>> >If use set a CBQ duplex-link you need to configure CBQ queues in both
>> >directions, i.e., link n2-n3 and n3-n2. 
>> >Since TCP agents have acks flowing in the opposite direction of the flow,
>> >you need either to configure a CBQ as a simplex-link or (if you choose
>> >to use a duplex-link) to configure CBQ in both directions.
>> >
>> >Carlos
>> >
>> >> 
>> >> I will appreciate your help on this and thanks so much for your help so
>> far.
>> >> I will be grateful to anybody that can help on this.
>> >> 
>> >>  
>> >> At 10:05 09/11/00 -0500, John Mehringer wrote:
>> >> >Links to ns documentation can be found at the following link.
>> >> >
>> >> >http://www.isi.edu/nsnam/ns/index.html
>> >> >
>> >> > - John
>> >> >
>> >> >Titus Awotula wrote:
>> >> >
>> >> >> Hi All,
>> >> >> I will be grateful if anybody can send me a link or information on
the
>> >> >> documentation on the use of CBQlink and CBQ Objects in NS.
>> >> >> Please it is urgent.
>> >> >> Titus Awotula, MSc AMIEE
>> >> >> Dept. of Electronic & Electrical Engineering
>> >> >> Loughborough University
>> >> >> Loughborough.
>> >> >> Leicestershire LE11 3TU
>> >> >> Tel: Office (01509) 228117
>> >> >>      Home   (01509) 558102
>> >> >> Fax: (01509) 227014
>> >> >
>> >> >
>> >> >
>> >> Titus Awotula, MSc AMIEE
>> >> Dept. of Electronic & Electrical Engineering
>> >> Loughborough University
>> >> Loughborough.
>> >> Leicestershire LE11 3TU
>> >> Tel: Office (01509) 228117
>> >>      Home   (01509) 558102  
>> >> Fax: (01509) 227014
>> >> 
>> >
>> >
>> >
>> Titus Awotula, MSc AMIEE
>> Dept. of Electronic & Electrical Engineering
>> Loughborough University
>> Loughborough.
>> Leicestershire LE11 3TU
>> Tel: Office (01509) 228117
>>      Home   (01509) 558102  
>> Fax: (01509) 227014
>> 
>
>
>
Titus Awotula, MSc AMIEE
Dept. of Electronic & Electrical Engineering
Loughborough University
Loughborough.
Leicestershire LE11 3TU
Tel: Office (01509) 228117
     Home   (01509) 558102  
Fax: (01509) 227014