BGP Communities


I’m just getting started setting up communities for my network. Is there any standard convention for community numbering (*:666 for RTBH for example)? I’ve looked at some examples from other carriers and it looks like everyone does their own thing.


Everyone does their own thing and I think that is a good thing. Just make
sure you properly publicly document what communities mean to you.

For some inspiration on communities you could take a look at RFC 8195.

Kind regards,


I think it's generally pretty free form, however I just wanted to note that
RTBH has a well known community of 65535:666 now, from RFC 7999.