Hi Gokul Here it is:
http://www-rp.lip6.fr/ns-doc/ns226-doc/html/mac-802__11_8cc.htm http://www-rp.lip6.fr/ns-doc/ns226-doc/html/mac-802__11_8h.htm http://www-rp.lip6.fr/ns-doc/ns226-doc/html/mac-802__11_8cc-source.htm Regards Mubashir Husain Rehmani Lip6, UPMC, Paris, France 2009/6/29 gokul bhat <gb...@ufl.edu> > > Also, Is it possible to get a class diagram for the mac.cc file?? It would > really help me. > > On Mon, Jun 29, 2009 at 9:19 AM, gokul bhat <gb...@ufl.edu> wrote: > > > Thanks a lot for your help. > > > > > > On Mon, Jun 29, 2009 at 9:02 AM, Mubashir Rehmani <mshrehm...@gmail.com > >wrote: > > > >> Hi Gokul > >> > >> Basically, there is a 4-way handshake i.e. RTS, CTS, DATA, ACK and RTS > and > >> CTS are broadcasted by MAC Protocol. For details, try to look at > >> mac802-11.cc. I am sending you a class diagram of cmu-trace.cc file > >> > >> http://www-rp.lip6.fr/ns-doc/ns226-doc/html/cmu-trace_8cc.htm > >> http://www-rp.lip6.fr/ns-doc/ns226-doc/html/cmu-trace_8cc-source.htm > >> > >> It will help you a lot. > >> > >> > >> Regards > >> Mubashir Husain Rehmani > >> > >> 2009/6/29 gokul bhat <gb...@ufl.edu> > >> > >>> > >>> Thank you. > >>> > >>> I went through this explanation and I did understand what the flags > stand > >>> for but did not understand the reason for broadcast of the CTS, ACK > >>> packets. > >>> Can anyone tell me is there any software or any online resource that I > >>> can > >>> use to understand the cmu-trace.cc file? > >>> > >>> On Mon, Jun 29, 2009 at 8:13 AM, Mubashir Rehmani < > mshrehm...@gmail.com > >>> >wrote: > >>> > >>> > Hi Gokul Bhat, > >>> > > >>> > Here is the answer to your question: > >>> > > >>> > "s" and "r" indicates that you send and receive the packets > >>> respectively. > >>> > RTR means network layer and AGT means application layer. > >>> > > >>> > Here is the full description of trace format: > >>> > > >>> > To find the interpretation of all possible trace format when you do > the > >>> > wireless simulation, you'd better read the code of ns2 in file > >>> *ns2home/ > >>> > trace/cmu-trace{.h, .cc}* Mostly, the format would be as > >>> > > >>> > ACTION: [s|r|D]: s -- sent, r -- received, D -- dropped > >>> > WHEN: the time when the action happened > >>> > WHERE: the node where the action happened > >>> > LAYER: AGT -- application, > >>> > RTR -- routing, > >>> > > >>> > > >>> > > >>> > > >>> > > >>> > LL -- link layer (ARP is done here) > >>> > IFQ -- outgoing packet queue (between link and mac layer) > >>> > MAC -- mac, > >>> > PHY -- physical > >>> > flags: > >>> > SEQNO: the sequence number of the packet > >>> > TYPE: the packet type > >>> > > >>> > > >>> > > >>> > > >>> > cbr -- CBR data stream packet > >>> > > >>> > DSR -- DSR routing packet (control packet generated by > >>> routing) > >>> > RTS -- RTS packet generated by MAC 802.11 > >>> > ARP -- link layer ARP packet > >>> > SIZE: the size of packet at current layer, when packet goes down, > size > >>> increases, goes up size decreases > >>> > > >>> > > >>> > > >>> > > >>> > > >>> > [a b c d]: a -- the packet duration in mac layer header > >>> > b -- the mac address of destination > >>> > c -- the mac address of source > >>> > d -- the mac type of the packet body > >>> > flags: > >>> > [......]: [ > >>> > source node ip : port_number > >>> > > >>> > > >>> > > >>> > > >>> > > >>> > destination node ip (-1 means broadcast) : port_number > >>> > ip header ttl > >>> > ip of next hop (0 means node 0 or broadcast) > >>> > ] > >>> > > >>> > > >>> > Regards > >>> > Mubashir Husain Rehmani > >>> > > >>> > 2009/6/29 gokul bhat <gb...@ufl.edu> > >>> > > >>> > > >>> >> Hello everyone > >>> >> > >>> >> I am new to NS2 and also I have very little experience in C/C++ > >>> >> programming. > >>> >> Although, I am catching up on the C++ stuff, I am unable to > understand > >>> the > >>> >> nam file generated after running any 802.11 MAC simulation in ns2. I > >>> am > >>> >> not > >>> >> able to figure out why most of the control packets are broadcast > that > >>> is > >>> >> their destination id is -1. I will paste a part of the nam file > >>> generated > >>> >> i.e. the part I am finding hard to understand. > >>> >> > >>> >> r -t 35.225473806 -s 2 -d -1 -p ACK -e 38 -c 2 -a 0 -i 0 -k MAC > >>> >> + -t 35.225823139 -s 3 -d -1 -p RTS -e 44 -c 2 -a 0 -i 0 -k MAC > >>> >> - -t 35.225823139 -s 3 -d -1 -p RTS -e 44 -c 2 -a 0 -i 0 -k MAC > >>> >> h -t 35.225823139 -s 3 -d -1 -p RTS -e 44 -c 2 -a 0 -i 0 -k MAC > >>> >> r -t 35.226175805 -s 4 -d -1 -p RTS -e 44 -c 2 -a 0 -i 0 -k MAC > >>> >> + -t 35.226185805 -s 4 -d -1 -p CTS -e 38 -c 2 -a 0 -i 0 -k MAC > >>> >> - -t 35.226185805 -s 4 -d -1 -p CTS -e 38 -c 2 -a 0 -i 0 -k MAC > >>> >> h -t 35.226185805 -s 4 -d -1 -p CTS -e 38 -c 2 -a 0 -i 0 -k MAC > >>> >> r -t 35.226490472 -s 3 -d -1 -p CTS -e 38 -c 2 -a 0 -i 0 -k MAC > >>> >> > >>> >> The code I am running is trying to simulate 16 stationary nodes and > is > >>> >> using > >>> >> CBR traffic. Please help me > >>> >> > >>> >> -- > >>> >> Gokul S Bhat > >>> >> Graduate Student, Electrical Engineering department, University of > >>> >> Florida, > >>> >> Gainesville > >>> >> > >>> > > >>> > > >>> > > >>> > -- > >>> > Mubashir Husain Rehmani > >>> > > >>> > > >>> > > >>> > >>> > >>> -- > >>> Gokul S Bhat > >>> Graduate Student, Electrical Engineering department, University of > >>> Florida, > >>> Gainesville > >>> > >> > >> > >> > >> -- > >> Mubashir Husain Rehmani > >> > >> > >> > > > > > > -- > > Gokul S Bhat > > Graduate Student, Electrical Engineering department, University of > Florida, > > Gainesville > > > > > > -- > Gokul S Bhat > Graduate Student, Electrical Engineering department, University of Florida, > Gainesville > -- Mubashir Husain Rehmani
