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

Mark Tinka mark.tinka at
Wed Sep 9 04:26:43 UTC 2020

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.

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