The guidelines suggested in this section are consistent with the guidelines presented in [3].
An AS should advertise a minimal aggregate for its internal destinations with respect to the amount of address space that it is actually using. This can be used by administrators of non-BGP 4 AS's to determine how many routes to explode from a single aggregate.
A route that carries the ATOMIC_AGGREGATE path attribute shall not be exported into either BGP-3 or EGP2, unless such an exportation can be accomplished without exploding the NLRI of the route.