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

Sun Oct 4 02:23:21 UTC 2020

> Using 2-byte communities in today's age of explosive "assignment" of
> 4-byte ASN's is similar to the price-hike of IPv4 space. In the long
> term. Standard BGP communities and IPv4 will not be worth the required
> effort/investment (unless you want to "cripple" yourself from the
> get-go). And IPv6 and Large BGP Communities is "slowly" gaining traction
> as the way to go.

There are no 2-octet communities. There have never been 2-octet communities.

Minimum 4 octets, which allows for a 2-octet ASN and a 2-octet community identifier.

Owen