RFC 252

RFC 252: Host Status Report 🎀

Okay bestie, here are the vitals ✨ This is RFC 252 from the Network Working Group, written by E. Wentheimer at Bolt, Beranek and Newman 💖 It's filed under Category F, G.3, dated 8 October 1971, with NIC number 7696. The title block doesn't list anything it obsoletes or updates.

Okay so the whole point of this RFC is to give you the latest tea on how most of the Network Hosts are doing 🫶 From September 27 through September 29, the BBN prototype Terminal IMP (Network Address 158) was offline because of hardware debugging 🔧 So nobody could check the Network on those days 😭

Three Hosts that weren't officially able to act as Server's back at RFC #240 can do it now 🎉 They're giving main character energy ✨

NETWORK          SITE              COMPUTER
ADDRESS
2                SRI (NIC)         PDF-10
6                MIT (Multics)     H-645
9                HARVARD           PDP-10

The Harvard PDP-10 has limited core space though 🥺 So it'll only run the Telnet program every so often 🌸

Next up are two tables that sum up the Host status from September 30 to October 8 💅

NETWORK  SITE  COMPUTER          DAY, DATE AND TIME (Eastern)
ADDRESS                   TH    F     M     Tu    W     Th     F
                          9/30  10/1  10/4  10/5  10/6  10/7  10/8
                          1100  1753  1200  1600  1100  1300  1530

 1     UCLA     SIGMA-7     O     T     D      O   #D    O     O
*65    UCLA     IBM-360/91  O     O     D      O    D    O     O
 2     SRI(NIC) PDP-10      O    #D     T     #T    O    T    #D
 66    SRI(AI)  PDP-10      D     D     D     D     D    D     D
 3     UCSB     IBM-360/75  D     O     O     O     O    O     O
 4     UTAH     PDP-10      D     D     D     D     D    D     D
 69    BBN(TENEX)  PDP-10   T     T     O     O     O    D     D
 6     MIT(Multics)H-645    O     O     D     T     D    T     T
 70    MIT(DM)     PDP-10   D     H     D     T     D    T     T
 8     SDC         IBM-360  D     D     D     D     D    D     D
 9     HARVARD     PDP-10   T     D     T     D     D    T     T
 10    LINCOLN     IBM-360  H     H     H     H     D    T     D

Here's the decoder ring 💜

• D = Dead 💀 The Destination Host is either dead or unreachable (because of network partitioning or a local IMP failure) from the BBN Terminal IMP.
• R = Refused 🙅 The Destination Host sent a CLS back to the initial RFC.
• T = Timed out ⏰ The Destination Host didn't respond at all to the initial RFC, but it's not dead.
• H = 1/2 Open 🌓 The Destination Host opened a connection and then either closed it right away or just went silent.
• 0 = Opened 🦋 The Destination Host opened a connection and the user could get in.

The UCLA IMB-360/91 has Remote Job Service (NETRJS) ✨ but it hasn't set up a full server Telnet System yet. The BBN Terminal IMP can't test NETRJS, but we're assuming that the UCLA explanatory message means NETRJS is working too 🙈

# These sites advertise that they might not be available at these times 🫣

Now for the status and prediction table, which shows who's a Server, who's User only, and who's just vibing with a "soon" 🧚

NETWORK  SITE   COMPUTER     STATUS or        "STATUS or PREDICTIONS"
ADDRESS                      PREDICTION        OBTAINED FROM

  1      UCLA     SIGMA-7     Server            Jon Postel
  65     UCLA     IBM-360/91  Remote Job
                              Service now,
                              Telnet in April   Bob Braden
  2      SRI(NIC) PDP-10      Server            John Melvin
  66     SRI(AI)  PDP-10      November          Len Chaiten
  3      UCSB     IBM-360/75  Server            Jim White
  4      UTAH     PDP-10      "Soon"            Barry Wessler
  5      BBN(NCC) DDP-516     Never             Alex McKenzie
  69     BBN(TENEX)  PDP-10   Server            Dan Murphy
  6      MIT(Multics)H-645    Server            Mike Padliosky
  70     MIT(DM)  PDP-10      Server            Bob Bressler
  7      RAND     IBM 360/65  User only         Eric Harslem
  71     RAND     PDP-10      January           Eric Harslem
  8      SDC      IBM-360/67  "Soon"            Bob Long
  9      HARVARD  PDP-10      Server            Bob Sundberg
  73     HARVARD  PDP-1       User only         Bob Sundberg
  10     LINCOLN  IBM-360     "Soon"            Joel Winnet
  74     LINCOLN  TX2         Uncertain         Tom Barkalow
  11     STANFORD PDP-10      November          Andy Moorer
  12     ILLINOIS PDP-11      User only         John Cravits
  13     CASE     PDP-10      December 15       Charles Rose
  14     CARNEGIE PDP-10      January           Hal VanZoeren
  15     PAOLI    B6500       Uncertain         John Cravits
  16     AMES     TIP         User only
  17     MITRE    TIP         User only
  18     BBN(TIP) Prototype TIP   User only

Last bit 🎀 This RFC got put into machine-readable form for the online RFC archives by Kelly Tardif, via Genie, in 10/1999 🌈