You didn’t have to be a customer of AT&T Internet to find that an ATT Internet outage disrupted your Internet communications this morning.
AT&T, which also includes Pacbell (Pacific Bell) and SBC Global, accounts for a significant portion of Internet routing and traffic between Internet sites in the San Francisco Bay area, and so when parts of the ATT Internet infrastructure go down, traffic between all sorts of places on the Internet gets disrupted and falls into a black hole.
For nearly 2 1/2 hours this morning, AT&T Internet routing stopped working. For those who are familiar with tracerouting, a typical traceroute between sites needing ATT to navigate the Internet between point A and point B looked like this:
|Get notified of new Internet Patrol articles for free!
|Or Read Internet Patrol Articles Right in Your Inbox!
as Soon as They are Published! Only $1 a Month!
Imagine being able to read full articles right in your email, or on your phone, without ever having to click through to the website unless you want to! Just $1 a month and you can cancel at any time!
1 192.168.1.1 (192.168.1.1) 2.944 ms 2.062 ms 1.760 ms
2 adsl-[private IP address].dsl.snfc21.pacbell.net ([private IP address]) 11.376 ms 10.127 ms 10.583 ms
3 dist2-vlan50.snfc21.pbi.net (18.104.22.168) 11.243 ms 10.500 ms 9.940 ms
4 bb2-10g2-0.snfcca.sbcglobal.net (22.214.171.124) 10.137 ms 10.457 ms 9.915 ms
5 bb1-p4-0.snfcca.sbcglobal.net (126.96.36.199) 10.932 ms 10.531 ms 10.661 ms
6 core1-p8-0.crsfca.sbcglobal.net (188.8.131.52) 10.425 ms 11.159 ms 10.006 ms
7 bb1-p8-0.crsfca.sbcglobal.net (184.108.40.206) 10.066 ms 10.895 ms 10.448 ms
8 ex1-p3-0.eqsjca.sbcglobal.net (220.127.116.11) 133.837 ms 206.346 ms 215.055 ms
9 * * *
10 * * *
11 * * *
Those *s are the Internet routing equivalent of “you can’t get there from here”, or, perhaps, “the bridge across that river has washed out.”
While nobody has yet identified exactly what happened – or taken responsibility – things started going wrong with AT&T routing just before 6:00 a.m. Pacific time. The outage remained until about 8:15 a.m.
No Paywall Here!
The Internet Patrol is and always has been free. We don't hide our articles behind a paywall, or restrict the number of articles you can read in a month if you don't give us money. That said, it does cost us money to run the site, so if something you read here was helpful or useful, won't you consider donating something to help keep the Internet Patrol free? Thank you!
|Get notified of new Internet Patrol articles!