by Darius Kazemi, December 10 2019
RFC-344 is titled “Network Host Status”. It's authored by Ellen Westheimer of BBN and dated May 22, 1972.
The technical content
This is another report from BBN on the status of various ARPANET hosts in the same series as RFC-342, RFC-332, RFC-330, RFC-326, RFC-319, RFC-315, RFC-306, RFC-298, RFC-288, RFC-287, RFC-267, RFC-266, RFC-255, RFC-252, RFC-235, and RFC-240.
The numbers, from May 8 to May 19:
- 58 dead
- 83 open
- 18 half open
- 17 timed out
- 1 refused
- 3 full/busy
While our proportion of fully-online hosts is the same as in the previous period, we now have far fewer “dead” connections. These connections are now replaced with “half-open” connections, where the Host opened a connection but then nothing happened. This is entirely due to the PDP-10 at the MIT Artificial Intelligence group coming (half) online on May 9. Apparently the PDP-10 at Stanford also came online but it still seemed to be mostly dead according to this survey.
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I'm Darius Kazemi. I'm an independent technologist and artist. I do a lot of work on the decentralized web with ActivityPub, including a Node.js reference implementation, an RSS-to-ActivityPub converter, and a fork of Mastodon, called Hometown. You can support my work via my Patreon.