[ns] How to set dynamic BER in 802.11 networks

hi,everyone! I want to simulate packet loss in wireless multi-hop network now. The BER is a variable value when the simulation run. But I don't know how to set the BER dynamically. As I know, There are only one fixed BER in a simulation. I hope the BER is time-varying and link-varying, tha

Re: [ns] TCP over 802.11b dropping ACKs

FTP is modeled as bulk data transfer, so in your case the source data rate is larger than available 11b bandwidth. ACKs at node 1 are dropped since IFQ becomes full after some point in time (dropped from tail). If you may increase the IFQ length or use another type agent, you may decrease the

Re: [ns] TCP over 802.11b dropping ACKs

Hi Dan, still getting dropped ACKS from node1 with column4=IFQ, indicating dropped because of queue??? Is tis some sort of NS error? Am I correct in thinking that this isn't a feature of the network/protocol and it should be ignored in my analysis? L >From: Dan Dechene <[EMAIL PROTEC

[ns] RES: NS-2 Simulation Performance

Hi Serkan What you mean with ns-2 performance ? Computational Processing Capacity ? Routing protocol efficiency ? Please clarify. Waldeck Torres -Mensagem original- De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Em nome de Serkan Ayaz Enviada em: terça-feira, 19 de dezembro de 2006

[ns] TCP over 802.11b dropping ACKs

Hi, I've a 2-node(static) wireless link(802.11b). The tracefile is showing me that ACK packets being sent from node1 to node0 are being dropped(which is OK), however, the fourth column in the tracefile is IFQ which implies that these packets are being dropped due to the ifq. How can this be?

[ns] AWK Problem-Urgent

Following is the error I am getting when running the attached awk file. awk: measure-loss.awk:2: 'in expressionss.awk:2: ^ invalid char ' I gave the command awk -f measure-loss.awk pmp.tr Following is the sample record from my pmp.tr file: s 1.375051200 _0_ AGT --- 0 cbr 512 [] --- [1:0 0:0

[ns] ns-2.29 under cygwin

Dear all , I was trying to install ns-2.29 under windows XP, while I faced the follwing problem : "checking system version (for dynamic loading)... ./configure: line 7624: syntax error near unexpected token ')' ./configure: line 7624: ' OSF*)' tcl8.3.2 configuration failed!

Re: [ns] CBR packet size on 802.11b link

Hi Pedro, what do you mean by L2 & L4 packet size? I enabled RTR & AGT. As far as I understand, the AGT trace shows the packet as it's generated by the agent(in this case UDP. I that correct? What does the RTR trace show? it's got the exact same packet size and timestamp as my AGT trace? I

[ns] Trace analysis-with Source modification in Wimax simulation

Hello all I am trying to do the traceanalysis by source modifciation as explained in below link method 2: http://140.116.72.80/~smallko/ns2/tool_en.htm Has anyone tried doing it that way?

[ns] how to run makefile & makedepend?

hi all, i have created a new data packet format to use it as an agent.inamed it packet1.now after creating the requisite packety.h, packet.cc files,i want to incorporate it in the ns.for this i edited the packet.h, makefile files.now it is recommended to run the makefile & makedepend file

[ns] Multi-channel Multi-interface extention hyacinth for NS-2.29

Hi, Ive adapt the extension in (hyacinth for NS-2.29): http://my.opera.com/HenryFD/blog/show.dml/270422 and it works successful. but i still have other questions about the extesion. in simple.tcl you can see: --- set chan_1_

[ns] Concerning IP over ATM & IP over Ethernet.

Hi my fellow nsers.I want to know if anyone has done any work on IP over ATM or IP over Ethernet.I'm currently carrying out a Literature review.I'm looking for work done on to area.I want to know the advantages and disadvantages of both networking technology.I want to start work on a project r

[ns] NS-2 Simulation Performance

Hi All, I wan to run a simulation with more than 500/1000 mobile nodes. How can I accelerate ns-2 performance? Thnks, Serkan __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

[ns] debugging

Hello, Is tre a way i can debug c++ part of my tcl script.Tcl debugger does not go to c++ part.suppose i want to debug scheduler::run() in the .cc code,then wat i have to do?Referring to a previous ns FAQs,i initialized some makefiles and CFLAGS.But that is not working out.Wheneve