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Jason Livingood Profile picture
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Jul 28 • 7 tweets • 2 min read
Interesting - from Decentralized Internet Infrastructure Research Group slides at #IETF114 (part of Internet Research Task Force, IRTF) in 3 slide snapshots 🧵 datatracker.ietf.org/meeting/114/ma…
Ok - that is more than 3 slides 😆 They were too interesting...

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More from @jlivingood

Jason Livingood Profile picture
Jul 30
Broadband: the bigger picture… Folks tend to over-focus on near-term changes in tech & business – missing forest for the trees. This past week I think I just saw a preview of what I think will be the biggest leap forward since broadband was created. (this is my personal take) 🧵
Since the 90s, networks have done a great job delivering ever greater speeds & amazing apps have developed to take advantage. That created the Internet we know & depend on today. It’s pretty awesome & we love it & it works great. But… what if it could be radically better?
Over time a small cadre of engineers, developers & researchers around the world started to realize that speed wasn’t the only factor influencing end user quality...
Read 21 tweets
Jason Livingood Profile picture
Jul 28
Downloaded Google's location data about me. Pretty interesting. Some random stuff. First - looks like I am near some specific stores in a strip mall sort of area.
Then my means of travel...
Here's when I went to a garden center to look around. I didn't remember that but I guess Google did. 😆
Read 5 tweets
Jason Livingood Profile picture
Oct 4, 2021
ELI5: Today's Facebook outage (based on no inside info). Internet is designed in layers, like house built on a foundation. No coordination between layers - but there's dependency. 1st meaningful part is "layer 3" - the Internet Protocol (IP) network layer. [thread] /1
The DNS generally (not always) depends on what is known as the User Datagram Protocol (UDP) for transport - which is layer 4 on top of IP at layer 3. Then the DNS protocol itself happens at layer 7 on top of IP addressing/routing and UDP transport. /2
Specifically most DNS runs on UDP port 53 (aka UDP/53). There are different "port" numbers - unique numbers - assigned for specific uses. This makes operations/troubleshooting/interop easier. Find 'em all at iana.org/assignments/se… /3
Read 26 tweets

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