[ns] Creating a network topology in NS2

[Magdy Fares]

Dear friends,Please how could I create a network topology in NS2 by using:ATT 
POP-level topology collected by Rocketfuel 
http://www.cs.washington.edu/research/networking/rocketfuel/;
Could any one help me for doing this?
Please I am waiting for a reply

Many thanksEng. Magdy

[ns] Hi friends

[Magdy Fares]

How are you all?
Please my brohers, I want to ask one question, that may all of you should face 
it before.
For wire-based or wire-less simulations, How could I produce a large number of 
nodes in my simulation to mimic real world simulations.

Please my friends send me a reply.
Eng. Magdy Fadel

[ns] Hi friends

[Magdy Fares]

How are you all?
Please my brohers, I want to ask one question, that may all of you should face 
it before.
For wire-based or wire-less simulations, How could I produce a large number of 
nodes in my simulation to mimic real world simulations.

Please my friends send me a reply.
Eng. Magdy Fadel

[ns] Wire-based network topological data

[Magdy Fares]

Please my Brothers
After implementing any wire-based network simulation.
How could I produce a huge number of nodes in the simulation to simulate real 
life networks to get real like measures.
How to get Network topology in wire-based networks.

Please my brothers help me.
Eng. Magdy

[ns] wire-based network topolgy

[Magdy Fares]

Please my Brothers
After implementing any wire-based network simulation.
How could I produce a huge number of nodes in the simulation to simulate real 
life networks to get real like measures.
How to get Network topology in wire-based networks.

Please my brothers help me.
Eng. Magdy

[ns] Wire-based networks users

[Magdy Fares]

How are you my friends?
Please for those whom are using NS2 for wire-based networks, How could you get 
toplogical data to use it in simulating normal internet traffic, from some 
sites like Lumeta corporation.

Please Help...

Eng. Magdy

[ns] Help friends (S.O.S)

[Magdy Fares]

Please my friends,
I have a big problem in implementing my new algorithm using NS2.
I
 am using a wire-based network, and I want to generate a large number of
 nodes to simulate the real life, but I do not know how to generate 
these huge number of nodes.
I have read in one paper that we can use 
topological data obtained from Lumeta project, but I do not now how to 
get these topologies.

Pleasse, I need help from all of you.
Thanks in advance

Magdy

[ns] Help my friends....

[Magdy Fares]

How are you all?

Please my friends, I need your urgent help, since I am developing a new 
algorithm to defend against DDoS attacks. And I need to create a large number 
of nodes to simulate real network world.

And I read in one papers that they use Topological data developed by Lumeta 
Corporation.

So please I want to know how to get these topological data and how could I use 
it in NS2.

Please friends, waiting for your important reply.

Thanks in advance.

Eng. Magdy

[ns] How are you my Friends?

[Magdy Fares]

Please my friends,
I am developing a new algorithm to develop sone DDoS attacks defense.

So, I need some tool to get a huge no. of nodes to simulate real world.

And I read in many papers that they use some thing named Internet mapping 
from some sites like Lumeta, cheswick and CADIA.

So, please is there any one could help me in how I can benifit from the sites 
in my project.

Many thanks in advance

Eng. Magdy Fadel

[ns] Help friends !!!

[Magdy Fares]

Hi,
I am working in a wire-based topology, and I need each node in the topology to 
has a unique 16 bits ID.

Actually I have a huge number of nodes in my topology. And I will use this 16 
bits ID in future work. Is there any way to do this in NS2.


Many thanks in advance

Eng. Magdy

[ns] Help my friends

[Magdy Fares]

Please, i implemented a new technique for filtering packets in a wired-based 
network. And I want to test the efficiency of this technique by measuring the 
no. of false positive and false negative as you know.

And to do that, I need a huge number of nodes in the simulation.

So the question is: How could I create this huge no. of nodes in the simulation?
Am I should create them manually, node by node, which will be a big problem to 
create this huge no.
Or, is there another way in NS2 to do this for me?

Please, waiting for your important reply.

Eng. Magdy Fadel

[ns] help my friends

[Magdy Fares]

please my fiends,
How could i read a field from each packet as they passes through each node in 
the simulation,
where could i add a function to do this

please help
Magdy Fadel

[ns] Please help

[Magdy Fares]

How are you Friends?

My simulation software is NS2, and i am a novice in using it and i feel that it 
is like a big sea, i do not know its bounderies.
So please help me if you can.

In my simulation, when generating a new node in the simulation it 
should has unique IP address (that consists of 16 bits) that i could use
again in the remaining simulation.


Plaese, is there any one that can guides my to do this? I will be so grateful.


Many thanks,
M.F.

[ns] Unique IP number for each node

[Magdy Fares]

Hi friends,

Urgent Help:

Please i am going to make a project, and i want to know how could i create a 
unique IP number consists of 16 bits, for each node i create in the simulation. 
And these numbers must be fixed all over the simulation so that i can use it 
any time through the simulation process.

Many thanks in advance
Eng. Magdy Fadel

Re: [ns] Code for editing packet header

[Magdy Fares]

How are you Sir,

In my project i need the code to do the following:
While the packet passes through the nodes in the path from the sender to the 
receiver, each node has a unique id consists of for example 3 or 4 bits, and 
there is a field of 16 bits in each packet header that holds the node id after 
XORing it with the old value.

I acctually did the following:
1- In the structure hdr_ip in the file ip.h , i added a variable of type int 
named tag_ to hold the node's id after doing XOR with the old values as i said 
befor.
2- And also in the same place i added an access function lkie this   int tag() 
{return tag_;}
3- In the file ip.cc, in the function export_offsets() , i added this line   
field_offset(tag_, OFFSET(hdr_ip, tag_));
I think, by these above three steps i added a new field in the packet headers 
that carry the nodes id after doing XOR between old and new values.

In the file agent.cc, and in the function  Agent::initpkt() , i added these two 
lines:
        iph-tag() = 3;

    printf(\n This packet has a tag of %d, iph-tag_);
I think these two lines are used for debugging.

So, if these steps are correcet, is there any one can help me to build on them 
to finish my task, please i need your help Urgently


Thank you friends,
Eng. Magdy Fadel



 From: Magdy Fares mfare...@yahoo.com
To: ns-users@isi.edu ns-users@isi.edu 
Sent: Saturday, February 2, 2013 12:14 AM
Subject: Code for editing packet header
 

To NS-Users,
              I am a Ph.D. student of and part of my project trys to XOR some 
data in the packet header while it travrses from the source to the destination. 
So i *urgently* need code to accomplish this point please.

So, Any One have code for this plz forward it **Urgently.**


Thanks and regards,
Magdy
 Fadel

[ns] Hi everybody

[Magdy Fares]

Hi everybody, there is no one answred to my question:
I want to know how to edit specific field in the packet header through its pass 
in the network by router nodes.
Is it so trivial than answering?

Please i need its answer very much.

Eng. Magdy

[ns] How can i edit the packet header as it passes through routers node in the network?

[Magdy Fares]

Hi everybody
I am working in a project for packet traceback.
And i want to know how to edit specific field in the packet header through its 
pass in the network by router nodes.
Magdy