Re: Out of ideas - Comcast issue BGP peering with Tata

[TJ Trout <tj () pcguys us>]

Is your IRR and RPKI roas all squared away?

On Fri, Nov 17, 2023, 8:12 AM Diego Eduardo Zorrilla Fierro (diefierr) via
NANOG <nanog () nanog org> wrote:

> Im not sure, just thinking, maybe is a thing with the /24. Is it possible
> to you get from Comcast maybe a /22 ??
>
>
>
> Regards
>
> Diego
>
>
>
> *From: *NANOG <nanog-bounces+diefierr=cisco.com () nanog org> on behalf of
> Mike Hammett <nanog () ics-il net>
> *Date: *Friday, November 17, 2023 at 09:51
> *To: *Jamie Chetta <jamie.chetta () ricoh-usa com>
> *Cc: *nanog () nanog org <nanog () nanog org>
> *Subject: *Re: Out of ideas - Comcast issue BGP peering with Tata
>
> This passing the buck thing was old a very long time ago.
>
> CDNs and security services are great at it too.
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>
>
> ------------------------------
>
> *From: *"Jamie Chetta via NANOG" <nanog () nanog org>
> *To: *nanog () nanog org
> *Sent: *Friday, November 17, 2023 8:17:42 AM
> *Subject: *Out of ideas - Comcast issue BGP peering with Tata
>
> I am out of ideas on how to get this fixed.  Long story short I am a
> customer of Comcast and am advertising my own /24 block I own through
> them.  Comcast of course BGP peers with multiple ISPs.  Other ISPs are
> accepting my prefix just fine, except Tata.  This is causing random
> destinations to drop connectivity if Comcast routes it through them.
> Comcast has confirmed they are advertising my block to Tata and that the
> RPKI is good, however when you check the Tata looking glass you can see
> they’re not accepting it.
>
>
>
> I’ve tried escalating within Comcast who refuses to contact Tata as
> they’ve validated the issue is not on their end but they agree with my
> assessment that Tata is not accepting the prefix for some reason.
>
>
>
> I’ve tried multiple email for Tata support (below), but they all circle
> around to a helpdesk who says I do not have a circuit with them so they
> cannot help me.
>
>
>
> Is there anyone from Tata willing to contact me off list to help sort this
> out?  Or anyone with ideas on specifically why other ISPs are accepting my
> route but not Tata?  It would be greatly appreciated.
>
>
>
> Emails I’ve tried
>
> Corporate  Helpdesk corp.helpdesk () tatacommunications com
>
> Tata Communications IP Service Support( AS-6453)
> IPServiceSupport () tatacommunications com
>
> IPNOC (Tata Communications - AS6453) IPNOC () tatacommunications com
>
> lg () as6453 net
>
>
> Response from Tata:
>
> “Acknowledge your email.
>
>
>
> However, since you are not associated with TCL we would not be in a
> position to help you on this.
>
>
>
> Request you to contact comcast for the assistance that you are seeking
> from us.”
>
>
>
> Response from Comcast:
>
> “This was sent back to me as not us. Basically, it’s not a RADB or RPKI
> issue. This is being accepted and re-advertised to TATA but not being
> accepted on their end. But another route that we checked off of that same
> SUR is being advertised the same way and accepted by them off
> pe12.350ecermak.il.ibone as an example of the TATA looking glass.  I would
> suggest that you would probably need to work with other networks as to why
> those that are specific ones are not accepting the block but as previously
> mentioned it’s not a RADB or RPKI issue and as a result not a Comcast
> issue.”