[ns] Re : Ns-users Digest, Vol 74, Issue 7

aoufi souhila aoufi_souhila at yahoo.fr
Mon Feb 8 03:33:36 PST 2010 


Hello
Multi path is useful to balance the load of traffic in the networke
it is very performante to use all the network ressource
using one path for all traffic will decrease the energy of some node but when we use multipath we balance the load of traffic accross all the node. 
--- 
Message: 1
Date: Sat, 6 Feb 2010 17:14:18 -0800
From: Arash Malekzadeh <arash8m at gmail.com>
Subject: Re: [ns] AOMDV routing problem
To: ns-users at ISI.EDU
Message-ID:
    <38c45c0b1002061714o4c81d0ei1d17f1b8ca005647 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Just adding to my previous email, it seems that it only uses a different
path when a link/path is lost. Is this the only case where it would
multipath ?

On Sat, Feb 6, 2010 at 4:19 PM, Arash Malekzadeh <arash8m at gmail.com> wrote:

> Hello,
>
> I was wondering under what condition a node would send packets through
> different paths when using AOMDV. I create 4 nodes and position them at the
> corners of a square. Now if I send packets from one corner to the opposite
> corner, it always goes along one path only. Am I perhaps missing something ?
>
> Thanks,
> Arash
>


------------------------------

Message: 2
Date: Sat, 6 Feb 2010 19:57:45 -0600
From: Benjamin Watson <bwatson1979 at gmail.com>
Subject: [ns] Modeling non-uniform traffic flows
To: ns-users at ISI.EDU
Message-ID:
    <334c4451002061757t5cc5603bga726c27ec2450df4 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

NS2 users,

I've used NS2 years ago at school and am looking at using it again for some
research at work. ?I need to model a classing pub-sub messaging
scenario. ?The real world implementation will probably involve SOAP,
but for all intents and purposes, I'd like to model HTTP traffic
(HTTP-PUT XML files) over TCP/IP.

The traffic doesn't follow any prescribed distribution. ?What I
have is a sample of all of the traffic produced during a certain
scenario (basically a huge list of XML messages). ?I know the message
size, and the messages are timestamped, so I know the message
frequency. ?Calculating bandwidth is simple math and I've done this
using Python to analyze all of the XML.

What I'd like to do at this point is attempt to understand application
LATENCY. ?So, given that I know the number of messages, their sizes,
and when they'll be sent, how can I construct an NS2 simulation to
model this. ?For now, it can be a simple 2 node topology.

Any thoughts?

Thank you.

Ben



------------------------------

Message: 3
Date: Sun, 7 Feb 2010 14:21:01 +0530
From: mn kishore <madasuk at gmail.com>
Subject: [ns] Query Regarding Short lived and Long lived flows in NS2
To: ns-users at ISI.EDU
Message-ID:
    <1d3163891002070051q265301e5pc18f41d1b2310681 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Dear All,
I need to simulate SHORT LIVED FLOWS and LONG LIVED FLOWS and BURSTY TRAFFIC
in NS2.
When I searched through the ns2 mailing list I have got the following reply
+++++++++++++++++++++++++++++++++++++++++++++++

you can use the tcp command "advanceby $num_pkts" to control how many

packets to transfer.

On Mon, 5 Jan 2004, Inge Hartono wrote:

> Hi all,
>
> How to run short (10 packets) and long TCP(1000 packets) flows through ns,
so I could compare the result of both?

> I found that Asym is a good place to start, but when I looked through the
example tcl code from /tcl/ex/asym/ directory, it's just overwhelmed.
>
> Could someone please tell me a simple code to implement it?

>
> Thanks alots,
> Inge

-- 
Xuan Chen
USC/ISI


+++++++++++++++++++++++++++++++++++++++++++++++

But when I tried above solution I have got the following error i.e., just by
including this line it shows error..........the error is......

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



--- Classfier::no-slot{} default handler (tcl/lib/ns-lib.tcl) ---
    _o38: no target for slot -1
    _o38 type: Classifier/Hash/Dest
content dump:
classifier _o38
    0 offset
    0 shift
    2147483647 mask
    1 slots
        slot 2: _o53 (Classifier/Port)
    -1 default
---------- Finished standard no-slot{} default handler ----------




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

can any one answer, where to include this line? and could you please kindly
send any code in which 'advanceby' is used?

Thanks in advance.
Regards,
M. N. Kishore Babu.


------------------------------

Message: 4
Date: Sun, 7 Feb 2010 16:31:08 +0500
From: waqar haq <warint06 at gmail.com>
Subject: [ns] size of packet and Application traffic
To: ns-users at ISI.EDU
Message-ID:
    <f18f95fe1002070331p782f52evdee491cd496c3bb7 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

hi

i have tried to create a routing algo for the wired network

i follow the dv and use dv tcl script where neccessay and port almost
everything in c++,

every thing is going fine

but there are some problem too

i don't how to set size_ of my packet consequently, in trace file it put 0
in packet size


and my application layer traffic is not started

when simulation begin it computes routing info and simulated routing traffic
,and then stop .i dont why it is not sending data traffic

i also install route in appropriate node but no data traffic still


------------------------------

Message: 5
Date: Mon, 8 Feb 2010 00:11:38 +0700
From: Rangga Adi Negara <kediri.rock.city at gmail.com>
Subject: [ns] [NS] MAODV in ns-2.33 or ns-2.34
To: ns-users at ISI.EDU
Message-ID:
    <afbd1b2d1002070911j2995b656maaa518c784c98985 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

are there any ns-2 user that successfully implement MAODV protocol in
ns-2.33 or ns-2.34 ?



------------------------------

Message: 6
Date: Sun, 7 Feb 2010 15:31:23 -0800 (PST)
From: hakki <huunal at gmail.com>
Subject: [ns]  monitor average window size and RTT
To: ns-users at ISI.EDU
Message-ID: <27493551.post at talk.nabble.com>
Content-Type: text/plain; charset=us-ascii


Hi all, 

I want to monitor the average window size W(t) and RTT in TCP. However, even
I can monitor queue, I can not monitor average window size and RTT.

Thanks for all your help

hakki
-- 
View this message in context: http://old.nabble.com/monitor-average-window-size-and-RTT-tp27493551p27493551.html
Sent from the ns-users mailing list archive at Nabble.com.



------------------------------

_______________________________________________
Ns-users mailing list
Ns-users at isi.edu
http://mailman.isi.edu/mailman/listinfo/ns-users


End of Ns-users Digest, Vol 74, Issue 7
***************************************

More information about the Ns-users mailing list