Re: [ns] About sat-repeater.tcl

[Merkourios Karaliopoulos <m.karaliopoulos@eim.surrey.ac.uk>]

Giuseppe hi

There doesn't seem to exist any error.
The enumeration of nodes for tracing purposes begins from 0 and follows 
the definition order within the script.Since the satellite node was
defined first, it takes value 0-therefore the source and destination get
1 and 2.This is what the trace file shows.
You could doublecheck it relying on the co-ordinates of the nodes in
the end of the trace file lines.
The only node missing in the trace lines is the satellite node -but this
is because it is a repeater node and the tracing at the satellite nodes
takes place after the Sat/MAC clas,which in case of the satellite repeater
case is simply not there.

I hope I understood what was your question and helped
Merkouris


On Sat, 4 Aug 2001, Giuseppe Tringali wrote:

> Hi all,
> 
> I have executed the script sat-repeater.tcl and then I have read the trace 
> file.
> 
> Assuming that I have understood both the script and the trace file ...
> 
> I think that UDP datagrams or TCP segments should arrive to node3. In other 
> words node3 in San Francisco should receive something.
> 
> But the trace file "says" something different.
> 
> Below you can find some lines of the trace file.  In the attached you can 
> find the complete trace file.
> By the way can I attach a file or is it deprecated?
> 
> + 1.0000 1 2 cbr 230 ------- 0 1.0 2.0 0 0 40.90 -73.90 37.80 -122.40
> - 1.0000 1 2 cbr 230 ------- 0 1.0 2.0 0 0 40.90 -73.90 37.80 -122.40
> r 1.2542 1 2 cbr 230 ------- 0 1.0 2.0 0 0 40.90 -73.90 37.80 -122.40
> ....
> ....
> + 97.0000 1 2 cbr 230 ------- 0 1.0 2.0 16 218 40.90 -73.90 37.80 -122.40
> - 97.0000 1 2 cbr 230 ------- 0 1.0 2.0 16 218 40.90 -73.90 37.80 -122.40
> r 97.2542 1 2 cbr 230 ------- 0 1.0 2.0 16 218 40.90 -73.90 37.80 -122.40
> 
> Where is my mistake? Could you help me?
> 
> Giuseppe Tringali