Re: Reachability problem with AS8388 [194.63.246.0/23]

[Carlos Friacas <cfriacas () fccn pt>]

On Tue, 12 Feb 2013, Grant Ridder wrote:

Hello,

> Can you provide the traceroute?

Yes. Please see below. We were already told they drop icmp packets making 
the traceroute useless beyond 62.38.94.98

I strongly suspect there is an issue only on the return path, but i would 
need a traceroute originated at the other end so i can be sure and 
understand where the packets (tcp & udp) are exactly being dropped.


Regards,
Carlos Friaças


# traceroute 194.63.247.20
traceroute to 194.63.247.20 (194.63.247.20), 30 hops max, 60 byte packets
 1  193.136.2.29 (193.136.2.29)  0.278 ms  0.256 ms  0.241 ms
 2  ROUTER4.10GE.Lisboa.fccn.pt (193.137.0.20)  0.294 ms  0.282 ms  0.269 
ms
 3  fccn.mx2.lis.pt.geant.net (62.40.124.97)  0.332 ms  0.320 ms  0.337 ms
 4  xe-2-3-0.rt1.mad.es.geant.net (62.40.98.107)  12.650 ms  12.725 ms 
12.641 ms
 5  as2.rt1.gen.ch.geant2.net (62.40.112.25)  34.808 ms  34.791 ms  34.863 
ms
 6  ae3.rt1.fra.de.geant2.net (62.40.112.161)  43.062 ms  43.022 ms 
43.010 ms
 7  te0-7-0-5.ccr22.fra03.atlas.cogentco.com (149.6.42.73)  43.724 ms 
43.808 ms  43.889 ms
 8  te0-0-0-2.ccr22.ams03.atlas.cogentco.com (130.117.3.89)  50.106 ms 
te0-2-0-2.ccr22.ams03.atlas.cogentco.com (130.117.1.65)  50.240 ms 
te0-0-0-2.ccr22.ams03.atlas.cogentco.com (130.117.3.89)  50.114 ms
 9  te0-2-0-0.ccr22.lon13.atlas.cogentco.com (130.117.1.170)  55.518 ms 
te0-0-0-0.ccr22.lon13.atlas.cogentco.com (130.117.1.225)  55.453 ms 
te0-5-0-0.ccr22.lon13.atlas.cogentco.com (154.54.61.154)  55.689 ms
10  te0-1-0-0.ccr22.lon01.atlas.cogentco.com (154.54.57.178)  55.570 ms 
te0-4-0-0.ccr22.lon01.atlas.cogentco.com (130.117.0.205)  55.452 ms 
te0-2-0-0.ccr22.lon01.atlas.cogentco.com (154.54.57.174)  55.481 ms
11  te2-1.mag02.lon01.atlas.cogentco.com (154.54.74.114)  55.439 ms 
55.356 ms  55.342 ms
12  149.6.187.234 (149.6.187.234)  55.370 ms  55.451 ms  55.493 ms
13  POS00-07-00-03.med00.brd.hol.gr (62.38.36.13)  127.954 ms *  127.106 
ms
14  tengigaeth00-01-00-02.med00.ccr.hol.gr (62.38.97.29)  136.321 ms * *
15  tengigaeth00-07-00-00.med00.csr.hol.gr (62.38.94.98)  125.525 ms 
125.519 ms  125.584 ms
16  * * *
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> -Grant
>
> On Tue, Feb 12, 2013 at 6:01 AM, Carlos Friacas <cfriacas () fccn pt> wrote:
>
>       Hello,
>
>       Does anyone has reachability issues with AS8388?
>
>       It seems i'm unable to get packets back from 194.63.246.0/23, but only if the source is my 193.136.0.0/15 block, 
> at
>       AS1930. It works well from my other netblocks. I'm basically performing a (non-recursive) DNS query to DNS servers
>       within 194.63.246.0/23.
>
>       I've been trying to involve upstream providers to take a deeper look at this problem, but i haven't had any luck 
> so
>       far. I can't even get a traceroute back to my network from anyone at AS8388.
>
>       Any suggestions?
>
>
>       Best Regards,
>       Carlos Friaças