nanog mailing list archives

Re: Best practices for BGP Communities


From: Christopher Morrow <morrowc.lists () gmail com>
Date: Wed, 6 Mar 2019 20:51:19 -0500

On Wed, Mar 6, 2019 at 7:53 PM Randy Bush <randy () psg com> wrote:

How does one distinguish "informational" and "action" of unknown
communities?


"if the community is unknown why would you take any action except to strip
it?"


the action ones are divisible by 3

</sarcasm>

you are in a twisty maze where there are no formnally defined semantics,
only a #:# syntax.  if there were general formal semantics, it could
have been put directly in bgp attributes.


isn't it really that the communities (well known aside) mean what you want
them to mean? you get to be creative and have fun!! imagine the fun you'll
leave behind with your follow on networking folks at your job!! great
times!

Current thread: