table separate from the main routing table of the router.
* Adj-RIB-In: For each neighbor, the BGP process maintains a conceptual adjacent routing information base, incoming, containing the NLRI received from the neighbor.
* Adj-RIB-Out: For each neighbor, the BGP process maintains a conceptual adjacent routing information base, outgoing , containing the NLRI sent to the neighbor.

The physical storage and structure of these conceptual tables are decided by the implementer of the BGP code. Their structure