[174570] in North American Network Operators' Group
Re: 192.250.24.0/22 (as 23034) not reachable from Verizon, tinet,
daemon@ATHENA.MIT.EDU (Karsten Elfenbein)
Thu Sep 18 20:16:43 2014
X-Original-To: nanog@nanog.org
In-Reply-To: <CADzy1LbJL29TrpiLp+NrPhOG5VbuqVHk68c3qkmEAt4tmZhwZw@mail.gmail.com>
From: Karsten Elfenbein <karsten.elfenbein@gmail.com>
Date: Thu, 18 Sep 2014 23:54:05 +0200
To: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Hi,
looks like you mainly use one transit provider (AS812) or your other
transit providers correctly filter that prefix.
According to https://stat.ripe.net/data/prefix-routing-consistency/data.json?preferred_version=0.7&resource=192.250.24.0%2F22
there is no route object for the 192.250.24.0/22.
As a result the AS6453(TATA COMMUNICATIONS (AMERICA) INC) seemed to
have started filtering the prefix from AS812. Which reduced the
visibility of that prefix. Check the BGplay from the last days:
https://stat.ripe.net/192.250.24.0%2F22#tabId=routing
so create the correct route object and the prefix should come up over
the next day(s)
Also get the more specific route objects removed which point to other AS.
192.250.24.0/23 AS702
192.250.24.0/24 AS19294
Karsten
2014-09-18 23:46 GMT+02:00 Karsten Elfenbein <karsten.elfenbein@gmail.com>:
> Hi,
>
> looks like you mainly use one transit provider (AS812) or your other
> transit providers correctly filter that prefix.
>
> According to https://stat.ripe.net/data/prefix-routing-consistency/data.json?preferred_version=0.7&resource=192.250.24.0%2F22
> there is no route object for the 192.250.24.0/22.
> As a result the AS6453(TATA COMMUNICATIONS (AMERICA) INC) seemed to
> have started filtering the prefix from AS812. Which reduced the
> visibility of that prefix. Check the BGplay from the last days:
> https://stat.ripe.net/192.250.24.0%2F22#tabId=routing
>
> so create the correct route object and the prefix should come up over
> the next day(s)
>
> Also get the more specific route objects removed which point to other AS.
>
> 192.250.24.0/23 AS702
> 192.250.24.0/24 AS19294
>
>
>
> Karsten
>
> 2014-09-18 22:42 GMT+02:00 Brock Massel <BMassel@descartes.com>:
>> Hi folks,
>> I'm hoping someone can shed some light on the situation.
>>
>> The 192.250.24 addresses have been reachable for several months in the current configuration with no reported issues. Since the 16th we have been hearing reports that destinations in that block are unavailable for some.
>>
>> Several looking glass' report network not in table.
>>
>> Can someone lend a hand? What is the best way to improve this situation? How do we find where the problem is?
>>
>> B
