On 2013-04-08 23:05, Johnny Billquist wrote: On 2013-04-08 18:13, Clem Cole wrote: I'm scratching very stale memory bits here, but Ultrix for the Vax/750 circa 1982/83 might have had a MOP server that did not need a full DECnet install. We did not run DEC-Net at one of my jobs because we had TCP/IP which did everything DECNet could do and worked across vendors. But I thought had a couple of LAT devices to support some dial-up modems and a funky DEC printer that after it booted, spoke TCP fine, but used MOP to boot. I was not involved with configuration or maintaining any of it, so none of the details ever stuck and lend together in my mind. But I would think you look at Ultrix around that time you might find something. Ultrix definitely got a mop server at some point. If it was around in 1982/83 is something I can't comment much on, however... My memories of LAT were that it was it's own protocol in the ethernet sense (i.e. had it's own packet type IIRC I want to say 6003) which was different from what DECnet used. It was a very low overhead protocol, very MIT Chaos-Net like, and much more efficient for terminals and other low speed devices than TCP. Correct. LAT is a protocol on ethernet. 0x6004 in fact. 0x6003 is actually DECnet. LAT is rather efficient, but it don't have any routing capability. By the way, MOP, from an ethernet point of view, is neither LAT nor DECnet. MOP is its own protocols on ethernet. 0x6001 and 0x6002. But I believe they were defined as being a part of the DECnet suite anyway. Johnny Johnny Clem On Sun, Apr 7, 2013 at 8:07 AM, Bob Armstrong <bob at jfcl.com <mailto:bob at jfcl.com>> wrote: installed Yeah, but most (actually, "all" I think) of the DECservers required MOP to download them. How did you do that without DECnet? Or was it just an unwritten catch-22 that you had to have a DECnet node somewhere to boot up your terminal server, even if it wasn't the node you actually wanted to connect to ? Bob -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol