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
