On 27-Apr-15 14:56, Cory Smelosky wrote: > On Mon, 27 Apr 2015, Timothe Litt wrote: > >> One clue: iprout.mac references an IP address owned by the Royal >> Institute of Technology in Sweden. >> > > ...This is getting absurd. Just how many stacks exist?! > That I know of? For IP? DEC had a TOPS-20 TCP/IP stack. Many of the upper level protocols were first implemented on t20/tenex, including smtp, ftp, telnet, time/daytime,tftp, dns. BBN had a TENEX stack. Not sure if DEC's started with it. USC/ISI had a KA on the ARPANET; not sure what stack. I believe ITS and WAITS both had TCP stacks; they certainly had NCP (the TCP predecessor, not the DECnet)
Speaking of NCP, http://www.computerhistory.org/internet_history/full_size_images/1971_net_map.gif shows 25 ARPAnet nodes in 1971, of which 9 are PDP-10s. There are 15 by 1973 (http://www.computerhistory.org/internet_history/full_size_images/1973_net_map.gif) There was at least one other university-created stack for TOPS-10; I want to say UW, but I'm not sure. Since DEC never built one (even internally), the customers were on their own. It may have been the 'tops-20 differentiator & the future' politics. I wasn't involved. I know there were a bunch of student project partially done attempts floating around the customer base. Usually customers converged on one codebase, but just what happened with TCP/IP on the -10 wasn't on my RADAR. It was too early for the commercial customers to care, so it was a small population of researchers and academics... Then there's the stack just posted - it is clearly incomplete. Interfaces: The AN10 for the KA/KI/KL (it lived on the IO Bus, so on the KL used the DIA20). The AN22 for the KS. These provided the 1822 interface to the IMPs. I know some folks used SLIP on serial lines. Of course once the KL got the KLNIA, ethernet was the way to go. Cheaper, faster - and by then, the IMP was gone. I'm probably missing some, but then I really don't have time to ponder this right now. >> I don't have time to dig into it any further. >> >> This communication may not represent my employer's views, >> if any, on the matters discussed. >> >
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