Frustrating loss of connectivity...
Haesu
haesu at towardex.com
Mon Oct 13 16:44:51 UTC 2003
Doh! silly me... I didn't read the whole email in the first time.. Sorry about useless post :(
-hc
--
Haesu C.
TowardEX Technologies, Inc.
Consulting, colocation, web hosting, network design and implementation
http://www.towardex.com | haesu at towardex.com
Cell: (978)394-2867 | Office: (978)263-3399 Ext. 170
Fax: (978)263-0033 | POC: HAESU-ARIN
On Mon, Oct 13, 2003 at 12:23:05PM -0400, Haesu wrote:
>
> Hi, have you tried the return path traceroute... Like, run traceroute _From_ the server behind dsl and back to you? Having traceroutes done either way may be helpful often times b/c sometimes problems do rise on asymetric routing situation where provider is doing bgp with x no. of providers.
>
> Please feel free to reply to me off list. I understand your frustration to get this out to bunch of engineers, but this may be clasifed as off-topic..
>
> Thanks,
> -hc
>
> --
> Haesu C.
> TowardEX Technologies, Inc.
> Consulting, colocation, web hosting, network design and implementation
> http://www.towardex.com | haesu at towardex.com
> Cell: (978)394-2867 | Office: (978)263-3399 Ext. 170
> Fax: (978)263-0033 | POC: HAESU-ARIN
>
> On Mon, Oct 13, 2003 at 10:33:26AM -0500, Robert A. Hayden wrote:
> >
> > 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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