RFC-255
by Darius Kazemi, September 12 2019
In 2019 I'm reading one RFC a day in chronological order starting from the very first one. More on this project here. There is a table of contents for all my RFC posts.
An improvement
RFC-255 is titled “Status of Network Hosts”. It's authored by Ellen Westheimer of BBN and dated October 26, 1971.
The technical content
This is another report from BBN on the status of various ARPANET hosts in the same series as RFC-252, RFC-235, and RFC-240.
The numbers this time:
- 47 dead
- 41 open
- 13 timed out
- 6 half open
- 1 refused
Analysis
The percentage of open connections has gone up to 38% from about 25%, so that's an improvement. In the intervening 20 days since RFC-252, we see the following changes:
- Both of UCLA's hosts are completely online instead of intermittently offline
- Utah has gone from completely dead to sometimes-timed-out
- Harvard has gone from completely dead to sometimes-timed-out
- SRI NIC is online more often
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About me
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.