RFC 255

RFC 255: Host Status Tea ✨

okay bestie, this is RFC 255 from the Network Working Group 🎀 It was written by Ellen Wentheimer at Bolt, Beranek and Newman and dated October 26, 1971. It updates RFC 252, so it's a follow-up 💅 The NIC number is 7696. The header doesn't list a category.

So this report covers the status of most Network Hosts from October 12 to October 22 🌸 Monday, October 11 was Columbus Day, so that one's not in it 🙈 Honestly, the big vibe is that over these two weeks, the general status of the Hosts stayed the same as before. Iconic consistency ✨

The table on the next page sums up the daily Host status for this stretch 💖

NETWORK  SITE         COMPUTER      DAY, DATE AND TIME (Eastern)
ADDRESS                              T     W     TH     F     M
                                   10/12 10/13  10/14 10/15 10/18
                                   1530  1600   1600  1700  1730
1        UCLA         SIGMA-7        O     O     O     O      O
65       UCLA         IBM-360/91     O     O     O     O      O
2        SRI(NIC)     PDP-10         O     O    #T     O      O
66       SRI(AI)      PDP-10         D     D     D     D      D
3        UCSB         IBM-360/75     O     O     O     O      O
4        UTAH         PDP-10         T     D     T     D      D
69       BBN(TENEX)   PDP-10         D     D     O     O      D
6        MIT(Multics) H-645          O     D     R     T      T
70       MIT(DM)      PDP-10         T     D     T     T      D
8        SDC          IBM-360-67     D     D     D     D      D
9        HARVARD      PDP-10         O     D     D     D      D
10       LINCOLN      IBM-360-67     D     D     D     H      D


NETWORK  SITE         COMPUTER      DAY, DATE AND TIME (Eastern)
ADDRESS                              T     W     TH     F
                                   10/19 10/20  10/21 10/22
                                   1630  1230   1330  1430
1        UCLA         SIGMA-7        O     O     O     O
65       UCLA         IBM-360/91     O     O     O     O
2        SRI(NIC)     PDP-10         T     O     O     O
66       SRI(AI)      PDP-10         D     D     D     D
3        UCSB         IBM-360/75     O     O     D     O
4        UTAH         PDP-10         T     D     T     D
69       BBN(TENEX)   PDP-10         D     O     O     O
6        MIT(Multics) H-645          T     D     D     O
70       MIT(DM)      PDP-10         D     H     H     H
8        SDC          IBM-360-67     D     D     D     D
9        HARVARD      PDP-10         D     D     D     D
10       LINCOLN      IBM-360-67     D     H     T     H

(page header: RFC 255, October 1971)

Here's the decoder ring for the letters 💜

• D = Dead 💀 The Destination Host is either dead or inaccessible [due to network partitioning or local IMP failure] from the BBN Terminal IMP.
• R = Refused 🙅 The Destination Host returned a CLS to the initial RFC.
• T = Timed out ⏰ The Destination Host didn't respond in any way to the initial RFC, but it's not dead, just ghosting.
• H = 1/2 Open 🌗 The Destination Host opened a connection, but then it either immediately closed it or stopped responding.
• O = Opened 🦋 The Destination Host opened a connection and was accessible to the user. Main character energy.

Some extra tea 🫖

* The UCLA IMB-360/91 currently has Remote Job Service (NETRJS), but hasn't implemented a full server Telnet System. The BBN Terminal IMP isn't equipped to test NETRJS, so, ngl, we're assuming that getting the UCLA explanatory message means NETRJS is also functioning 🙈

# These sites advertise that they may not have their system available at these times. Respect the honesty 🫶

[This RFC was put into machine readable form for entry] [into the online RFC archives by Kelly Tardif, Viagenie 10/99] 🧚