Ethereal-dev: Re: [ethereal-dev] New Dissector for Sinec H1

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

From: "Gerrit Gehnen" <G.Gehnen@xxxxxxxx>
Date: Thu, 02 Mar 2000 10:22:23 +0100
Guy Harris wrote:
> If anything else uses COTP atop the inactive subset of CLNP, a different
> scheme might have to be used.  (Presumably the inactive subset is used
> when the packet doesn't need to be routed by CLNP and the receiving site
> knows implicitly what protocol is to be used atop CLNP.)

I don't know of any other protocol which uses the OSI-stack with the
inactive-
subset-CLNP flavour. "Inactive subset" means in fact "no routing, just
one wire".
So it is not likely to have any collision between different future
dissectors.
(Btw.: which other protocols use the OSI-stack?)

But you are right, the scheme to return FALSE if a higher
level-dissector
can't handle the packet is better. This gives more flexibility.

Because I'm living behind a firewall, which blocks CVS,  I have wait for
the 
next release and your enhancements to the code - and of course the new
HOWTO.
Afterwards I will start the next round of development for S7.

Beside of the H1-protocol there is another protocol of interest for us:
The TCP/IP-based protocol used by Allen-Bradley for their
PLC's. - See http://freshmeat.net/appindex/1999/11/07/941993013.html 
for Ron Gage's  linux-based communication library. 
It is basically the AB DF1 protocol over TCP/IP with Port 2222.

Thanks for your efforts
   Gerrit

-- 
Dr.-Ing. Gerrit Gehnen      Abt. LT
ATR Industrie-Elektronik    Textilstra�e 2, 41751 Viersen, Germany
Tel. (+49)2162 485-362      Fax (+49)2162 485-100
http://www.atrie.de