Re: BGP Community - AS0 is de-facto "no-export-to" marker - Any ASN reserved to "export-only-to"?'

[Jeff Tantsura via NANOG <nanog () nanog org>]

Great excuse ;-)

Regards,
Jeff

> On Sep 9, 2020, at 15:16, Mike Hammett via NANOG <nanog () nanog org> wrote:
>
> 
> If history has taught us anything, everything we do will be ignored by those that most need it.  :-)
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>
> From: "Mark Tinka" <mark.tinka () seacom com>
> To: "Mike Hammett" <nanog () ics-il net>
> Cc: nanog () nanog org
> Sent: Wednesday, September 9, 2020 7:59:55 AM
> Subject: Re: BGP Community - AS0 is de-facto "no-export-to" marker - Any ASN reserved to "export-only-to"?'
>
> Well, the proposed de facto standard is only useful for what we need to signal outside of the AS.
>
> Since an operator will still need to design for communities used internal to the AS (which will have nothing to do 
> with the outside world, and be of a higher number), they can accomplish both tasks in one sitting; in lieu of first 
> designing for internal use, and then trying to design again for the external standard.
>
> At any rate, as Nick said yesterday, if it's taken us over 2 decades to agree on the well-known communities we have 
> today, perhaps the industry should go ahead and standardize this proposal anyway, and then see what happens. If 
> history has taught us anything, folk will do what they want for 23 or so years, and even then, it might not turn out 
> the way we hoped.
>
> If it were me, I'd spend my time on other things. I can design internal operator-specific communities that also do 
> the right thing externally, if needed. Heck, it's what I've done already. My customers are happy and I have little 
> incentive to fix that. 
>
> But that's just me :-).
>
> Mark.
>
> On 9/Sep/20 14:47, Mike Hammett wrote:
> Exactly. There are far more pressing things when launching a new network than coming up with a BGP community scheme 
> from scratch, learning everyone else's BGP community scheme, etc. If networks used a standard, then there is a very 
> minimal ramp-up.
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>
> From: "Mark Tinka" <mark.tinka () seacom com>
> To: "Mike Hammett" <nanog () ics-il net>
> Cc: nanog () nanog org
> Sent: Wednesday, September 9, 2020 6:47:13 AM
> Subject: Re: BGP Community - AS0 is de-facto "no-export-to" marker - Any ASN reserved to "export-only-to"?'
>
>
>
> On 9/Sep/20 13:41, Mike Hammett wrote:
> How is that any different than any other network with minimal connectivity (say a non-ISP such as a school, medium 
> business, local government, etc.)?
>
> Because the existing flexibility of dis-aggregated BGP community design can be done without any need to be in concert 
> with the rest of the world, and your network won't blow up. There are far more pressing things to consider when 
> launching a new network.
>
>
>
> Also, it would likely help that new ISP in Myanmar learn their limited upstream's communities if there were a 
> standard.
>
> There used to be a very large global transit network that did not support BGP communities for their customers or 
> peers. I'm not sure if that is still their position in 2020, but back then, it did not stop them from growing quite 
> well.
>
> Mark.