I don't think the OP cares about what you do internally.
From: "Mark Tinka via NANOG" <nanog@nanog.org>
To: nanog@nanog.org
Sent: Tuesday, September 8, 2020 11:26:43 PM
Subject: Re: BGP Community - AS0 is de-facto "no-export-to" marker - Any ASN reserved to "export-only-to"?'
On 8/Sep/20 20:35, Mike Hammett via
NANOG wrote:
How I see the OP's intent is to create a
BCP of what defined communities have what effect instead of
everyone just making up whatever they draw out of a hat,
simplifying this process for everyone.
Which only matters if you are extending a community outside of your
own network to someone else's.
If the communities are to be used internally, then it doesn't matter
what definition an operator uses.
Mark.