3.7.d Implement optimize and troubleshoot routing policies

3.7.d [iii] Outbound route filtering

sounds like a  cheesy sci-fi character… outbound route filtering in bgp… the rfc puts it very succinctly below… it is a capability (code 3) passed between like minded orfers…

http://tools.ietf.org/html/rfc5291

1. Introduction

   Currently, it is not uncommon for a BGP speaker [BGP-4] to receive,
   and then filter out some unwanted routes from its peers based on its
   local routing policy.  Since the generation and transmission of
   routing updates by the sender, as well as the processing of routing
   updates by the receiver consume resources, it may be beneficial if
   the generation of such unwanted routing updates can be avoided in the
   first place.