Date: Wed, 12 May 93 04:30:10 PDT
From: Advanced Amateur Radio Networking Group <tcp-group@ucsd.edu>
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Reply-To: TCP-Group@UCSD.Edu
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Subject: TCP-Group Digest V93 #122
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TCP-Group Digest            Wed, 12 May 93       Volume 93 : Issue  122

Today's Topics:
                       JNOS <---> SP deadlock.
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Date: Tue, 11 May 1993 16:18:30 +0300 (CET-DST)
From: ARATO@IIF.KFKI.HU (Arato Andras)
Subject: JNOS <---> SP deadlock.
To: tcp-group@ucsd.edu

Hello,

I use JNOS as an Internet  gateway. I usually login into  it
from 1200 baud  radio side with  ordinary AX25. My  favorite
terminal program is  SP5 (from  DL1MEN) so my  TNC works  in
Host mode.  I have  found the  following deadlock  situation
during heavy traffic (it is very usual in Budapest, HA :-).

   - JNOS repeating I frame  for SP because it doesn't  read
     acknowledgement from SP.

   - SP Rejects I frame from JNOS, but JNOS can not read it.

   - JNOS repeating I frame for  SP, but SP Rejects it  only
     ones. JNOS exhausts its repeat count and disconnects.

Host mode firmware  repeats only twice  the I frames,  after
that it will send RR frames to test the other station.  JNOS
repeats I frame all the time.

Have anybody met this situation?

73! de Andras.

Internet: arato@iif.kfki.hu
AX25: HG5BDU@HA5OB.
 

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Date: Tue, 11 May 93 15:51:18 MET
From: larsh@front.se
Subject: unsubscribe
To: tcp-group@ucsd.edu

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End of TCP-Group Digest V93 #122
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