1 legacy26-0.default.csail.mit.edu (18.26.0.1) [AS3] 0 ms 0 ms 0 ms
2 kalgan.trantor.csail.mit.edu (128.30.0.245) [AS40] 0 ms 0 ms 0 ms
3 B24-RTR-2-CSAIL.MIT.EDU (18.4.7.1) [AS3] 0 ms 0 ms 0 ms
4 EXTERNAL-RTR-1-BACKBONE.MIT.EDU (18.168.0.18) [AS3] 1 ms 4 ms 2 ms
5 ge-6-23.car2.Boston1.Level3.net (4.79.2.1) [AS3356] 0 ms * 0 ms
6 * * ae-5-5.ebr1.NewYork1.Level3.net (4.69.132.250) [AS3356] 8 ms
7 ae-61-61.csw1.NewYork1.Level3.net (4.69.134.66) [AS3356] 10 ms 5 ms
16 ms
8 ae-13-69.car3.NewYork1.Level3.net (4.68.16.5) [AS3356] 67 ms 59 ms
58 ms
9 att-level3-oc192.NewYork1.Level3.net (4.68.127.150) [AS3356] 17 ms
127 ms 12 ms
10 tbr1.n54ny.ip.att.net (12.123.3.57) [] [MPLS: Label 31537 Exp 0] 80 ms
79 ms 79 ms
11 12.122.16.153 (12.122.16.153) [] [MPLS: Label 19 Exp 0] 76 ms 77 ms
77 ms
12 cr1.cgcil.ip.att.net (12.122.1.190) [] [MPLS: Label 1188 Exp 0] 77 ms
76 ms 77 ms
13 12.122.17.146 (12.122.17.146) [] [MPLS: Label 31051 Exp 0] 77 ms 78
ms 78 ms
14 tbr1.sffca.ip.att.net (12.122.10.6) [] [MPLS: Label 31320 Exp 0] 78 ms
78 ms 78 ms
15 gbr5.sffca.ip.att.net (12.122.11.74) [] [MPLS: Label 323 Exp 0] 72 ms
71 ms 71 ms
16 gar1.sj2ca.ip.att.net (12.122.2.253) [] 76 ms 76 ms 77 ms
17 * * *
18 * * *
19 * * *
20 * * *
A brief look at routeviews shows www.cisco.com (198.133.219.25)
originating from AS109 (Cisco) and transiting via AS7132 (AT&T/SBC) and
AS7018 (AT&T). Thus I suspect this is an issue with AS109 (Cisco) and
not with their providers. Though, I do feel wrong using the plural
"providers" in this case...
Yep; when I sent my previous note, AS109 was still originating routes.
But packets seemed to die at the border router. Now I'm also seeing
routes via AS701 (UU/Verizon Biz) and AS1239 (Sprint) as well as AT&T,
but still no connectivity.
A few moments ago I was getting a response from the www.cisco.com
website, but it was a 403 Forbidden response. Thus I suspect that it's
not even a network problem so much as a website (LB, server, etc) issue,
or a DDoS attack, etc.
(Perhaps operators are changing route policy, trying to "fix" the wrong
issue?)