Got to ask, any ideas?

[dspazman at epicup.com]

So I had to give up a bandwidth customer because of this situation.  I really want to track down what it could be though.

I was able to ping their router.  We had an established BGP session.  They were on a cisco unit, I'm using Bird.  I could see all the routes in my table.  I could run show protocols all <protocol> and see the filter filtering down the full routing table to just export 4 routes (one was the default route, other three were just 3 more we were trying).  I could run show route export <protocol> and see the 4 routes listed as being exported.

But they never saw any routes.  They never got my announced routes.  But it was an established BGP session.

Any ideas?