BGP TTL

[Martin, Christian]

> Only if your neighbor listens to communities & does not strip any
> that they recieve.  [Someone at lunch mentioned one ISP that wanted
> a guarentee that their neighbor would not propogate some routes &
> did not want to rely on setting no-export as that breaks too often.]

Perhaps communities should become mandatory transitive attributes?  Or, at a
minimum, perhaps the default configuration (as is the case with one major
vendor)?  From what I am seeing, the current ptomaine work (aside from
nopeer) is heavily reliant on communities, which as you suggest, often are
broken.  There have been many a route leakage because one peer was not
configured to propagate communities.

regards,
-chris