[seqfan] www.research.att.com down-ish?

[Joerg Arndt]

Mostly nonresponsive to queries on port 80.

Looks like the AT&T routing is wobbly,
(tcp)traceroute gives varying results
(mostly only ends shown):


% tcptraceroute www.research.att.com
Selected device eth0, address 10.1.1.7, port 48582 for outgoing packets
Tracing the path to www.research.att.com (192.20.225.32) on TCP port 80 (http), 30 hops max
 1  10.1.1.1  0.641 ms  0.485 ms  0.463 ms
[...]
14  cr1-tengig-0-7-3-0.losangeles.savvis.net (204.70.193.105)  184.526 ms  181.457 ms  180.051 ms
15  * * *
16  208.174.194.66  196.332 ms  178.374 ms  178.517 ms
17  cr2.la2ca.ip.att.net (12.123.30.134)  250.523 ms  249.996 ms  250.459 ms
18  cr1.slkut.ip.att.net (12.122.30.29)  247.111 ms  249.017 ms  248.499 ms
19  cr2.dvmco.ip.att.net (12.122.30.26)  249.997 ms  250.000 ms  252.166 ms
20  cr1.cgcil.ip.att.net (12.122.31.86)  254.362 ms  252.966 ms  253.430 ms
21  cr2.cgcil.ip.att.net (12.122.2.54)  249.728 ms  249.255 ms  249.481 ms
22  cr1.n54ny.ip.att.net (12.122.1.1)  251.704 ms  253.425 ms  252.454 ms
23  cr81.nw2nj.ip.att.net (12.122.105.30)  254.907 ms  262.493 ms  252.938 ms
24  gar3.nw2nj.ip.att.net (12.122.105.109)  252.657 ms  252.193 ms  251.710 ms
25  12.119.12.74  253.419 ms  253.310 ms  255.421 ms
26  * * *
27  * public.research.att.com (192.20.225.32) [open] 249.632 ms *


% tcptraceroute www.research.att.com 
Selected device eth0, address 10.1.1.7, port 53542 for outgoing packets
Tracing the path to www.research.att.com (192.20.225.32) on TCP port 80 (http), 30 hops max
 1  10.1.1.1  0.586 ms  0.467 ms  0.469 ms
[...]
16  208.174.194.66  178.846 ms  178.732 ms  187.940 ms
17  cr2.la2ca.ip.att.net (12.123.30.134)  251.760 ms  250.487 ms  247.797 ms
18  cr1.slkut.ip.att.net (12.122.30.29)  248.283 ms  248.986 ms  248.528 ms
19  cr2.dvmco.ip.att.net (12.122.30.26)  250.965 ms  250.720 ms  251.476 ms
20  cr1.cgcil.ip.att.net (12.122.31.86)  254.430 ms  254.170 ms  254.684 ms
21  cr2.cgcil.ip.att.net (12.122.2.54)  250.496 ms  250.012 ms  249.285 ms
22  cr1.n54ny.ip.att.net (12.122.1.1)  252.557 ms  254.411 ms  255.178 ms
23  cr81.nw2nj.ip.att.net (12.122.105.30)  254.411 ms  253.446 ms  251.491 ms
24  gar3.nw2nj.ip.att.net (12.122.105.109)  250.702 ms  251.677 ms  251.723 ms
25  12.119.12.74  253.218 ms  253.345 ms  255.005 ms
26  public.research.att.com (192.20.225.32) [open]  250.674 ms  249.215 ms  251.949 ms


btw., amazing:
 10 hops inside AT&T's network for a public mail server!