BGP TTL

[john heasley]

Wed, Mar 20, 2002 at 05:30:17PM -0500, Andrew Partan:
> On Wed, Mar 20, 2002 at 03:25:23PM -0500, Martin, Christian wrote:
> > Perhaps communities should become mandatory transitive attributes?
> 
> That is not a good idea.  You still need to block communities you use
> internally so others can't effect your router.
> 
> Ideal provider config is
> 	- strip all communities you use for internal markers on input
> 	- act on all communities you tell you customers they may use
> 	- strip all your communities on output

> 	- let all other communities thru untouched

do folks (teir-1s) actually leak customer initiated/added communities
through to their peers?  any actually listen to communities from their
peers?