11 Sep
2015
11 Sep
'15
9:01 a.m.
On Sep 11, 2015, at 11:52 AM, Paul Koning
<paulkoning at comcast.net> wrote:
Sorry, I misremembered the different traceroute runs. The one that goes into cogentco
fails for me too, all the way to 64 hops. But I had a different traceroute run from a
different location that shows gtt.net, then 5 lines of * * *, then ii.net and on to the
destination. So * * * is not necessarily the sign of a black hole, though it can be
that.
paul
On Sep 11, 2015, at 11:40 AM, Jay Jaeger
<cube1 at charter.net> wrote:
On 9/10/2015 8:32 PM, Jon Elson wrote:
I saw the same sort of thing but I let traceroute keep running. The result is that it
started giving real answers again just one or two hops later.
Conclusion: hops 16-20ish are blocking traceroute packets. Later hops aren't.
It's hard to be patient sometimes, but while * * * sometimes indicates "this is
as far as you get" it may also indicate just a few nodes that are not cooperating
with traceroute on a functional route.
So, I wonder if I can ask classiccmp members, especially in the US, to
check if they can view this page:
http://members.iinet.net.au/~daveb/simplex/simplex.html
I cannot make a connection. My DNS is able to resolve the address.
ISP is Charter cable, Madison WI (Fitchburg, from the DNS name), then to
Eau Claire WI, then Chicago, IL where it looks like they apparently peer
with Cogent.
As with others, the traceroute stopped at Cogent. Note that this may
mean that the next hop after that blocks all of the packets or it could
mean that the next hop is blocking just the traceroute packets.
JRJ
1 * * *
2 dtr01ftbgwi-tge-0-6-0-3.ftbg.wi.charter.com (96.34.25.58) 15.413 ms
16.531 ms 16.524 ms
3 crr01ftbgwi-bue-4.ftbg.wi.charter.com (96.34.18.108) 23.528 ms
21.479 ms 23.501 ms
4 crr01euclwi-bue-1.eucl.wi.charter.com (96.34.16.77) 21.431 ms * *
5 bbr01euclwi-bue-4.eucl.wi.charter.com (96.34.2.4) 21.157 ms 21.153
ms 21.318 ms
6 bbr02euclwi-bue-5.eucl.wi.charter.com (96.34.0.7) 25.319 ms 16.876
ms 22.938 ms
7 bbr01chcgil-bue-1.chcg.il.charter.com (96.34.0.9) 25.460 ms 26.958
ms 23.483 ms
8 bbr02chcgil-bue-6.chcg.il.charter.com (96.34.0.67) 26.751 ms
27.724 ms 27.695 ms
9 te0-18-0-2.ccr41.ord03.atlas.cogentco.com (38.122.181.65) 25.728 ms
30.118 ms 28.197 ms
10 be2216.ccr41.ord01.atlas.cogentco.com (154.54.24.201) 27.315 ms
27.427 ms be2217.ccr42.ord01.atlas.cogentco.com (154.54.24.205) 27.389 ms
11 be2156.ccr21.mci01.atlas.cogentco.com (154.54.6.85) 41.659 ms
be2157.ccr22.mci01.atlas.cogentco.com (154.54.6.117) 40.758 ms 38.666 ms
12 be2432.ccr21.dfw01.atlas.cogentco.com (154.54.3.133) 47.510 ms
be2433.ccr22.dfw01.atlas.cogentco.com (154.54.3.213) 53.865 ms
be2432.ccr21.dfw01.atlas.cogentco.com (154.54.3.133) 52.515 ms
13 be2441.ccr21.iah01.atlas.cogentco.com (154.54.41.65) 53.141 ms
be2443.ccr22.iah01.atlas.cogentco.com (154.54.44.229) 55.853 ms
be2441.ccr21.iah01.atlas.cogentco.com (154.54.41.65) 55.407 ms
14 be2066.ccr22.lax01.atlas.cogentco.com (154.54.7.54) 86.437 ms
be2065.ccr21.lax01.atlas.cogentco.com (154.54.5.66) 89.222 ms 87.085 ms
15 be2017.ccr21.lax04.atlas.cogentco.com (154.54.0.237) 94.160 ms
be2019.ccr21.lax04.atlas.cogentco.com (154.54.88.10) 90.385 ms 88.573 ms
16 * * *
17 * * *
18 * * *
19 * *^C