Frustrating loss of connectivity...
Robert A. Hayden
rhayden at geek.net
Mon Oct 13 15:33:26 UTC 2003
Hey all,
I apologize for posting this here, especially for what is essentially an
end-user broadband issue, but I'm looking at what appears to be a link a
few hops upstream from me that has been flapping frequently and I can't
get our provider to look into it.
I am located in Madison, WI, and I have my mail/server machine geek.net
co-located in Minneapolis on a business-class DSL line (1.5m/384k). For
the past couple of months, I'll lose connectivity for about 5 minutes
several times a day.
We attempted to open a case with the DSL provider (covad), but they were
only interested in addressing last-mile issues and we got nowhere. Same
applied when addressing it from my broadband end, since the disconnect is
3 providers upstream.
In any case, any thoughts on where I should go with this? I could try
Level3, but I suspect they'll blow me off since I'm not a direct customer.
It's getting quite frustrating as I'm trying to move a few hundred mb back
and forth over the VPN and with that one link flapping it's become almost
impossible.
Traceroute examples included below. I left real IPs here since they are
all easily determined anyways:
------
TRACE #1: From my home connection to Geek.NET when it's BROKEN, note
where it breaks.
C:\>tracert 66.166.71.243
Tracing route to geek.net [66.166.71.243]
over a maximum of 30 hops:
1 24 ms 10 ms 29 ms 10.44.64.1
2 11 ms 10 ms 11 ms 172.18.98.98
3 19 ms 22 ms 43 ms 172.18.97.58
4 16 ms 14 ms 15 ms 12.125.143.113
5 58 ms 34 ms 47 ms gbr2-a90s19.cgcil.ip.att.net [12.123.5.78]
6 16 ms 17 ms 16 ms tbr1-p013602.cgcil.ip.att.net [12.122.11.37]
7 31 ms 28 ms 14 ms ggr2-p310.cgcil.ip.att.net [12.123.6.65]
8 16 ms 105 ms 16 ms so-1-1-0.edge1.Chicago1.Level3.net [209.0.227.77]
9 21 ms 21 ms 33 ms so-2-1-0.bbr2.Chicago1.level3.net [209.244.8.13]
10 32 ms 19 ms 14 ms pos9-0.core1.Chicago1.level3.net [209.247.10.170]
11 20 ms 31 ms 48 ms gige6-2.ipcolo2.Chicago1.Level3.net [209.244.8.30]
12 64 ms 29 ms 36 ms unknown.Level3.net [209.247.226.26]
13 * * * Request timed out.
14 * * * Request timed out.
..
30 * * * Request timed out.
Trace complete.
----------------------------------
TRACE #2: Same trace, but this time when it's working.
C:\>tracert 66.166.71.243
Tracing route to geek.net [66.166.71.243]
over a maximum of 30 hops:
1 21 ms 16 ms 15 ms 10.44.64.1
2 10 ms 22 ms 11 ms 172.18.98.98
3 10 ms 15 ms 11 ms 172.18.97.58
4 13 ms 37 ms 14 ms 12.125.143.113
5 15 ms 18 ms 18 ms gbr2-a90s19.cgcil.ip.att.net [12.123.5.78]
6 26 ms 15 ms 19 ms tbr1-p013602.cgcil.ip.att.net [12.122.11.37]
7 36 ms 39 ms 14 ms ggr2-p310.cgcil.ip.att.net [12.123.6.65]
8 34 ms 14 ms 37 ms so-1-1-0.edge1.Chicago1.Level3.net [209.0.227.77]
9 17 ms 14 ms 14 ms so-2-1-0.bbr2.Chicago1.level3.net [209.244.8.13]
10 17 ms 13 ms 14 ms pos9-0.core1.Chicago1.level3.net [209.247.10.170]
11 18 ms 15 ms 16 ms gige6-2.ipcolo2.Chicago1.Level3.net [209.244.8.30]
12 24 ms 27 ms 25 ms unknown.Level3.net [209.247.226.26]
13 30 ms 17 ms 23 ms 192.168.5.66
14 49 ms 52 ms 102 ms 172.18.57.242
15 91 ms 40 ms 39 ms geek.net [66.166.71.243]
Trace complete.
-------------------
Trace #3: Final trace, from Geek.NET back to my home broadband host
(my home IP changed to 10.0.0.1 for this example).
traceroute to 10.0.0.1 (10.0.0.1), 30 hops max, 38 byte packets
1 r-66-166-71-241.CHCGILGM.covad.net (66.166.71.241) 1.050 ms 0.938 ms 0.891 ms
2 172.31.255.253 (172.31.255.253) 24.068 ms 26.558 ms 26.169 ms
3 192.168.5.65 (192.168.5.65) 22.466 ms 23.301 ms 22.528 ms
4 gigabitethernet8-0-131.ipcolo1.Chicago1.Level3.net (209.247.34.177) 23.638 ms 23.263 ms 22.539 ms
5 gige5-1.core1.Chicago1.Level3.net (209.244.8.17) 22.243 ms 23.256 ms 22.528 ms
6 so-4-0-0.bbr2.Chicago1.level3.net (209.247.10.169) 22.883 ms 22.522 ms 21.514 ms
7 so-7-0-0.edge1.Chicago1.Level3.net (209.244.8.14) 23.624 ms 23.530 ms 23.884 ms
8 att-Level3-oc48.Chicago1.Level3.net (209.0.227.78) 23.853 ms 22.426 ms 23.137 ms
9 tbr2-p014001.cgcil.ip.att.net (12.123.6.70) 25.277 ms 25.311 ms 23.857 ms
10 gbr6-p20.cgcil.ip.att.net (12.122.11.62) 24.244 ms 23.695 ms 24.001 ms
11 gar2-p370.cgcil.ip.att.net (12.123.5.221) 23.892 ms 23.012 ms 23.858 ms
12 12.125.142.122 (12.125.142.122) 27.939 ms 27.272 ms 28.703 ms
13 * * *
14 * * *
15 10.0.0.1 (10.0.0.1) 40.235 ms 39.292 ms 38.271 ms
-------
Any thoughts or recommendations here?
- Robert
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