Re: AS 3356 (Level 3) -- Community 3356:666

[Steve Meuse <smeuse () mara org>]

Unless, of course, your BGP policy was written long before that RFC was
established and you didn't think it was worth the config upgrade to support
something that had been in use since around 1998 or so :)

-Steve



On Wed, Aug 4, 2021 at 10:27 AM Daniel Suchy via NANOG <nanog () nanog org>
wrote:

> Hello,
> there's exactly *one* blackhole well-known community, which should be
> used for this purpose - 65535:666 (standardised in RFC 7999). There's no
> reason to use even "ASN:666" format these days...
>
> - Daniel
>
> On 8/4/21 3:28 PM, Sriram, Kotikalapudi (Fed) via NANOG wrote:
> > There is an old NANOG thread from 2005 that said AS 3356 (Level 3) were
> applying 3356:666 to indicate Peer route:
> >
> https://archive.nanog.org/mailinglist/mailarchives/old_archive/2005-12/msg00280.html
> > Also, see: https://onestep.net/communities/as3356/
> >
> > Now network operators commonly use ASN:666 for BGP Blackholing Community.
> > (ASN = the operator's AS number)
> > See, for example, https://www.he.net/adm/blackhole.html
> >
> > Does anyone know if AS 3356 has changed how it uses 3356:666?
> > I.e., is it known if they now use it for Blackholing Community?
> >
> > Thank you.
> >
> > Sriram