milt@cmcvax.UUCP (Milt Roselinsky) (11/21/89)
In article <3215@convex.UUCP> thurlow@convex.com (Robert Thurlow) writes: >> >>You mean you know how (on BSD Unix) to set up the /etc/hosts file? >>Which you have to do by hand? Or am I missing something? What you To which Per Andersson responds: > >What he probably means is that there is a controlled way to be assigned >a worldwide unique IP-subnet for your needs. Of course you only need this >if you are to be connected to the Internet/Eunet/etc. The discussion above seems to have moved away from general X.400 questions and into the realm of name and address administration. This brings up some questions that have been puzzling me for a long time: 1 - I'd be real interested in hearing from anyone who understands how OR Names and NSAP Addresses are going to be administered in their respective neck of an eventual worldwide OSI Network. Are the administrative offices currently in place and operating in this capacity? 2 - How is this being done with currently available X.400 services? 3 - Will there be worldwide X.500 services and who will support/ administer? Is there agreement on what should go into the directory? These questions are probably somewhat unclear, as I find it difficult to glean answers to these questions from reading any specs I've been able to get my hands on. Milt Roselinsky CMC Corp. cmcvax!milt@hub.ucsb.edu 125 Cremona Dr. Santa Barbara, Ca. 93117
mhsc@fs1-cg.oce.nl (Maarten Schoonwater) (11/22/89)
In article <8911201633.AA13020@cmcvax> milt@cmcvax.UUCP (Milt Roselinsky) writes: > >1 - I'd be real interested in hearing from anyone who understands how >OR Names and NSAP Addresses are going to be administered in their >respective neck of an eventual worldwide OSI Network. Are the >administrative offices currently in place and operating in this >capacity? This is one of the things where network administrators are helpful, PTT's for instance. For X.25 the NSAP addresses are already globally assigned (X.121 standard which uses a hierarchical structure like with a globally unique network identifier and a per domain assigned net number), you can dial all over the world. For NSAPs on local area networks a like strategy is true but you can not know how to reache a certain network, this is more the scope of a directory service that could tell you the gateway address for this net. For X.400 I would certainly not recomment direct connections over X.25. We have currently 10 connections with our research partners here in Europe (ODA over X.400 over X.25), but it is painful to keep such a network up. You have to test all the layers with all the partners and adjust all the parameters. With one change per month per partner you are always busy! For real X.400 interconnections you need ADMD's, who give you a X.400 service. Then you only have to connect physically to your ADMD and for the rest you only have to know the OR-names of your relations, the ADMD's will take care of all the routing. > >2 - How is this being done with currently available X.400 services? > I was informed that our Dutch PTT pilot ADMD has already connections to 8 other ADMD's, like Gold400 in the UK and Atlas in France. There are about 30 (large) sites connected. Mind that behind most sites a DEC, IBM or whatever network is hanging with many users. >3 - Will there be worldwide X.500 services and who will support/ >administer? Is there agreement on what should go into the directory? > For the moment the number of X.400 connected relation of you will not be that big and a local directory as part of a user interface will do. I guess that X.400 directory books will show up for some time (like Fax directories are now). In the end ( few years) a global network of interconnected X.500 servers (DSA's) will be the real solution. This will really be a "Value Added Network service", there are not so many services which add value around yet. >These questions are probably somewhat unclear, as I find it difficult >to glean answers to these questions from reading any specs I've been >able to get my hands on. > No problem at all, I think your questions are very to the point. >Milt Roselinsky CMC Corp. >cmcvax!milt@hub.ucsb.edu 125 Cremona Dr. > Santa Barbara, Ca. 93117 Maarten Schoonwater Oce-Nederland BV Venlo, Netherlands email: mhsc@oce.nl phone: +31 77 59 35 48 This note does not necessarily represent the position of Oce-Nederland B.V. Therefore no liability or responsibility for whatever will be accepted.