RFC 667

RFC 667: Host Ports ✨

okay bestie, title block tea 🫖 this is RFC 667, called Host Ports, from the Network Working Group. It was written by S. Chipman of BBN-TENEX (NIC 31422) and dated December 1974. The original doesn't list a category, and it doesn't obsolete or update anything 💅

The Plan 🗺️

this is the approved scheme for hooking our computers up to the network, and it goes live on December 18, 1974 🎀 here's the whole layout:

    __________________
   | PDP-11           |
   | SPEECH FRONT END |________
   | 50.=62(8)        |      __|_________
   |__________________|     |            |
    __________________      |   IMP-50   |________\ NCC-TIP
   | PDP-10           |     |____________|        /
   | SYSTEM D         |________|   |   |
   | 114.=162(8)      |            |   |
   |__________________|            |   |________________________
    __________________             |                            |
   | PDP-10           |            |                            |
   | SYSTEM A         |________    |                            |
   | 197.=305(8)      |        |   |                            |
   |__________________|        |   |                            |
    __________________       __|___|_____                       |
   | PDP-11           |     |            |                      |
   | LPT              |_____|   IMP-5    |________\ CCA         |
   | 69.=105(8)       |     |____________|        /             |
   |__________________|        |   |                            |
    __________________         |   |                            |
   | PDP-11           |        |   |                            |
   | PACKET RADIO     |________|   |                            |
   | 133.=205(8)      |            |                            |
   |__________________|            |                            |
    __________________             |    ________________________|
   | PDP-10           |            |   |
   | SYSTEM B         |________    |   |
   | 49.=61(8)        |      __|___|___|_       ____________
   |__________________|     |     49     |_____|    161     |
    __________________      | BBN10X-TIP | VDH | ANALOG TIP |  Local
   | PDP-10           |     |____________|     |____________|  Terminals
   | SYSTEM C         |________|
   | 241.=361(8)      |
   |__________________|

Local vs. Distant 🦋

so basically every host interface is local, with one exception: host number 005 is an easily convertible local/distant interface 🙈 Div 6 asked us to steer clear of it so they can check out PDP-10 IMP interfaces more easily. that's a whole vibe of "don't touch, we're testing" 💀

The Line Printer Trick 🖨️

the PDP-11 with the line printer is intentionally on host 105 🧚 why? so a simple minded program can respond whenever someone tries to ICP to its logger socket. the reply is literally "To login to BBN (System C) use host number 241(10)" ✨ iconic routing, no notes.

[ This RFC was put into machine readable form for entry ] [ into the online RFC archives by Alex McKenzie with ] [ support from GTE, formerly BBN Corp. 2/2000 ]