OSI TP4/CONS on X.25 Network

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2 total messages Started by Bent Nielsen Tue, 21 Jul 1992 20:25

#57

Author: Bent Nielsen
Date: Tue, 21 Jul 1992 20:25

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Hi netters,

I am looking for an OSI TP4/CONS implementation to be used on a X.25 network.

Our hardware platforms are IBM RISC System/6000 and IBM PS/2 with SCO UNIX.

Please help with information about hardware and software suppliers.

Thanks.
--
Bent Nielsen                Email : bni@modulex.dk
A/S MODULEX                 Phone : +45 44 53 30 11
Hoerkaer 20                 Fax :   +45 44 53 30 74
DK-2730 Herlev
Denmark

Re: OSI TP4/CONS on X.25 Network

#62

Author: Ketil Albertsen,TIH
Date: Fri, 31 Jul 1992 13:43

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In article <673@modulex.dk>, bni@modulex.dk (Bent Nielsen) writes:

>I am looking for an OSI TP4/CONS implementation to be used on a X.25 network.

I do not have an answer to your request, yet I wonder:
Why do you want to run TP4 over X.25??

The main raison d'etre of TP4 over the other ones are that it handles
error correction and multiplexing (in the transport layer). But X.25 
already does this for you in the net layer, so transport doesn't have to.
You usually run TP1 over X.25, or if you have a bad X.25 net or require
extremely low error rates, TP3.

(Unless, of course, you are using X.25 as a link level connection, and
have other unreliable and/or non-multiplexing links in the end-to-end
connection.)

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