Re: TCP Retransmission timers ?

[Bob Braden <[e-mail]>]

  *> From [e-mail]  Wed Sep 18 10:13:03 2002
  *> From: sebastiano elia <[e-mail]>
  *> To: [e-mail]
  *> Subject: TCP Retransmission timers ?
  *> Date: Wed, 18 Sep 2002 18:54:23 +0200
  *> MIME-Version: 1.0
  *> Content-Transfer-Encoding: 8bit
  *> X-MIME-Autoconverted: from quoted-printable to 8bit by lombok-fi.lerc.nasa.gov id g8IGsfBg025553
  *> X-AntiVirus: scanned by AMaViS 0.2.1
  *> 
  *> please, can someone tell me what kind of retransmit policy is used, in current 
  *> implementations of TCP ?
  *> a)"First only"  with only one retrasmission timer for entire queue;
  *> b)"Batch" with only one retrasmission timer for entire queue;
  *> c)"Individual" with one timer for each segment in queue.
  *> 

Is this a "policy", or an implementation design question?  In other
words, does this design choice have any observable effect on the packet
flow on the wire?  If not, it is not a protocol question.  There are
no standards for implementation design issues.

Bob Braden

  *> Which of these is the standard ?
  *> 
  *> thanks in advance,
  *> 
  *>