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The protocol war In retrospect, the year 1988 in many respects was decisive for the future of the networking scene in Europe, and thus between Europa and the rest of the world. It was in that year that the "protocol war" culminated and led to the separation of the "official bodies" (European Commission (CEC), national governments, PTT's, RARE) and the "practical workers" (Eunet, EARN, CERN/HEPNET). Some abbreviations used here: • EUnet: European Unix Network • EARN: European Academic Research Network (IBM-sponsored) • HEPNET: High-Energy Physics Network • CPG: COSINE Policy Group • MDNS: Managed Data Network Service (by the PTT's) • IXI: International X.25 Infrastructure (PTT's) |
Date: 30-Jun-1988
Subject: WPA/CPG
Here are some (personal!) comments on the interim report produced by
Working Party A and the decisions made by the Cosine Policy Group.
Furthermore an overview of current developments and activities around
a shared pan-European X.25 infrastructure.
Comments:
The whole WPA business was a tough thing, with almost continuous
clashes between the two "main parties" involved, i.e. EUnet, EARN
and HEPNET on one side, COSINE, RARE and CEC/IES on the other. It
was only after wasting most of three (!) full meetings that things
were more or less settled.
Almost right from the start it was clear what RARE/COSINE/CEC had
in mind: get an infrastructure off the ground on the shortest possible
term, managed by the PTT's MDNS (only a CEPT project at the moment,
not a real service or company!). Most strongly opposed to this was
EARN, with its own complete migration strategy and new infrastructure
to be set up *very* soon. But neither EUnet nor HEPNET were in any
way happy with the idea of PTT's managing a European infrastructure,
the same PTT's that sofar have shown not to be able to provide an
international X.25 infrastructure that even remotely comes close to
the needs of the existing networks; just look at the effective speed
of uucp (not to/from mcvax of course....) over international X.25
links and you'll know what I mean.
In the last WPA meeting, prior to the CPG meeting, a complete draft
of the interim report was drawn up and discussed. In the report
two possible implementations of an X.25 infrastructure were by then
proposed; EUnet and HEPNET (EARN was not represented at that meeting)
objected to these and added a third possibility, that in the final
report became option 1: an upgrade and migration of the current
networks (EUnet, EARN, HEPNET) into a shared X.25 infrastructure.
Note that the wording of option 1 in the report also allows reading
"the PSDN's" for the "existing networks"; politics of course.
Since - as said - it was clear that the RARE/COSINE/CEC "group" would
strongly favour the MDNS solution and since it could be expected that
this solution was to be presented as the best solution to the CPG, I
wrote up a complete proposal, representing the viewpoint of EUnet.
The draft was discussed with [...] (EUnet) and [...] (HEPNET) and
faxed to [...] (EARN), all on the Friday before the CPG
meeting; after some changes all gave their consent, so the proposal
could be presented as backed by EARN and HEPNET. It was added as an
official appendix (Appendix D) to the report.
If you look at the decisions made by the CPG, you'll see that they
indeed chose for the MDNS solution (option 2 in the report), as could
be expected. After I heard of that, my immediate reaction was that
EUnet, EARN and HEPNET should stop participating in WPA and instead
join efforts to set up their own shared infrastructure. But after I
got the complete text of the CPG decisions and heard (from [...],
the person with the many hats [RARE, COSINE etc.]) about the background
of the decisions, my view changed. See below.
Important reasons for the decision were:
- until the last minute Germany has always heavily opposed to the
Statement of Direction and Cooperation; the CPG gave in and therefore
that Statement was never officially ratified. At the last CPG meeting
Germany demanded that all participants in the new infrastructure would
be allowed to **only** run ISO/OSI protocols over that infrastructure.
This time the other CPG members did not give in and Germany was left
alone; the main argument was that continuity of existing services
should be guaranteed.
- it was clear that most countries represented in the CPG would not
accept it if the PTT's were not actively involved (other than being
the supplier of the lines) and would only go along with a CEPT/MDNS
solution.
An absolute requirement from EUnet, EARN and HEPNET has always been
that there should be no restrictions on running specific (existing)
protocols over the new infrastructure; as said, this requirement was
met by the CPG decisions. An additional requirement from EUnet was that
the *whole* current EUnet user group should be given continued service,
independent of the nature of a specific EUnet site. Now, if you read the
text of the CPG decisions, you'll see that this EUnet requirement was
indeed met in point 6: EUnet is indeed a network "supporting research
in Europe".
Piet
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