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Answers to Review Questions
C. The Version field is not found in a BGP common header. If the
common header specifies this to be a BGP OPEN message, then the
Version field will be found in the message but not in the BGP common
E. There is no WAIT message type. The OPEN message type is used
to establish a connection between BGP peers. The NOTIFICATION
message type is used to advertise errors. The UPDATE message type is
used to advertise topology updates and changes, and the KEEP-
ALIVE message type is sent to keep a session active when no UPDATE
messages are exchanged during the established hold time.
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