[outages] Peering issue between Cogent and Tata?

[Miller, Jon]

It appears to be resolved now.  Thank you all for taking a look.

From: Robert Heuvel <RHeuvel at atom86.net>
Sent: Tuesday, January 10, 2023 12:24 PM
To: Miller, Jon <JMiller at boselaw.com>; mike tancsa <mike at sentex.net>; outages at outages.org
Subject: RE: [outages] Peering issue between Cogent and Tata?

That is a Route Validation issue.
The IP 35.209.30.41<http://35.209.30.41> is part of 35.208.0.0/15<http://35.208.0.0/15> for which a ROA has been created by AS15169 to be originated by AS15169.
If check the IP on the Cogent looking glass, Cogent shows that the IP is coming from AS19527 (which is not correct according to the ROA for this prefix…

Kind regards,
Robert Heuvel
atom86
From: Outages <outages-bounces at outages.org> On Behalf Of Miller, Jon via Outages
Sent: Tuesday, January 10, 2023 06:14 PM
To: mike tancsa <mike at sentex.net>; outages at outages.org
Subject: Re: [outages] Peering issue between Cogent and Tata?

35.209.30.41<http://35.209.30.41>.

Jon Miller | Chief Information Officer
Bose McKinney & Evans LLP
111 Monument Circle | Suite 2700 | Indianapolis, Indiana 46204
JMiller at boselaw.com<mailto:JMiller at boselaw.com> | P 317-684-5108 | F 317-223-0608

Assistant Contact | Brad Cline  | bcline at boselaw.com<mailto:bcline at boselaw.com>  | P 317-684-5186  | F 317-223-0186


From: mike tancsa <mike at sentex.net<mailto:mike at sentex.net>>
Sent: Tuesday, January 10, 2023 12:03 PM
To: Miller, Jon <JMiller at boselaw.com<mailto:JMiller at boselaw.com>>; outages at outages.org<mailto:outages at outages.org>
Subject: Re: [outages] Peering issue between Cogent and Tata?


Out of our Toronto connection to 174, I see about 30k prefixes from 174_6453_. Can you give some sample IPs you cant reach ?

    ---Mike
On 1/10/2023 11:59 AM, Miller, Jon via Outages wrote:
We are having trouble resolving some web sites and Cogent says the issue appears to be with Tata.  We can resolve the web sites from non-cogent networks.  Is anyone seeing similar?


Jon Miller | Chief Information Officer
Bose McKinney & Evans LLP
111 Monument Circle | Suite 2700 | Indianapolis, Indiana 46204
JMiller at boselaw.com<mailto:JMiller at boselaw.com> | P 317-684-5108 | F 317-223-0608

Assistant Contact | Brad Cline  | bcline at boselaw.com<mailto:bcline at boselaw.com>  | P 317-684-5186  | F 317-223-0186




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