BGP runs over a reliable transport （请作答此空）. This eliminates the need to implement explicit update fragmentation, retransmission, acknowledgement, and （ ）. Any authentication scheme used by the transport protocol may be used in addition to BGP"s own （ ）mechanisms. The error notification mechanism used in BGP （ ）that the transport protocol supports a “graceful” close, i.e., that all outstanding data will be delivered （ ）the connection is closed.

BGP runs over a reliable transport （请作答此空）.  This eliminates the need to implement explicit update fragmentation, retransmission, acknowledgement, and （ ）.  Any authentication scheme used by the transport protocol may be used in addition to BGP"s own （ ）mechanisms.  The error notification mechanism used in BGP （ ）that the transport protocol supports a “graceful” close,  i.e., that all outstanding data will be delivered （ ）the connection is closed.