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Re: ---A---

On Wed, 24 Feb 1999, Luigi Pieretti wrote:

: Original message
: 
: >What does "A" means in the above trace line?
: >I can't find any expl in ns docs. Please help.
: 
: Hello,
: J think "A" means that the packet has been retransmitted; it's not the 
: first instance of trasmission. It happens when a TCP timeout expires.
: To be honest J haven't found any documentation about that, but that 
: seems to be reasonable.
: Luigi
: 

hi!

i'm using ns-allinone-2.1b3.

the responsible function for the trace output is

Trace::format() in the file ~ns/trace.cc

it seems that the "A" flag is turned on to indicate that the sender
responded to congestion, i.e. "Congestion Action"
(taken from the comment for the variable cong_action_ in ~ns/tcp.h).

i guess that all possible values for those trace flags (which seem to
be C,P,A,E,N for my ns-2.1b3) should be added to the nsDoc.ps
documentation

hope this helps,
chris

 -----------------------------------------------------------------
  Christof Brandauer                        [email protected]
  Student of Applied Informatics                 
  Department of Computer Science, University of Salzburg, Austria
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