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 |