B

backup domain controllers, 290 bastion hosts, 370

BECN (backward explicit congestion notification), 83 BGP (Border Gateway Protocol), 76 attributes, 77-78 characteristics, 77 configuring, 79 messages, 76

birthday attacks, 372

blocking state (spanning tree), 31

bootstrap program, 153

BPDUs (Bridge Protocol Data Units), 31

BRI (Basic Rate Interface), 80

bridging, 28

port states, 31 transparent, 30 broadcast domains, 30 broadcasting, 292 browsing, 291

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