Reauthenticate Port(s) ..................................................................................................................................................78
RADIUS Server .............................................................................................................................................79
Setting Up IP Interfaces .................................................................................................................................81
MD5 Key........................................................................................................................................................83
Route Redistribution Settings.........................................................................................................................83
Static ARP Table............................................................................................................................................85
Static/Default Route .......................................................................................................................................86
RIP Version 1 Message Format....................................................................................................................................88
RIP 1 Message..............................................................................................................................................................88
RIP 1 Route Interpretation ...........................................................................................................................................89
RIP Version 2 Extensions.............................................................................................................................................89
RIP2 Message Format ..................................................................................................................................................89
Enabling RIP ................................................................................................................................................................90
Setting Up RIP .............................................................................................................................................................90
Configuring OSPF..........................................................................................................................................91
OSPF Authentication....................................................................................................................................................91
Simple Password Authentication..................................................................................................................................91
The Backbone and Area 0 ............................................................................................................................................92
Virtual Links ................................................................................................................................................................92
Partitioning the Backbone ............................................................................................................................................92
Neighbors .....................................................................................................................................................................92
Adjacencies ..................................................................................................................................................................93
Designated Router Election..........................................................................................................................................93
Building Adjacency......................................................................................................................................................93
OSPF Packet Formats...................................................................................................................................................94
The OSPF Packet Header .............................................................................................................................................94
The Hello Packet ..........................................................................................................................................................95
The Database Description Packet .................................................................................................................................97
The Link-State Request Packet ....................................................................................................................................98
The Link-State Update Packet......................................................................................................................................99
Link-State Advertisement Formats.............................................................................................................................100
Router Links Advertisements.....................................................................................................................................102
Network Links Advertisements..................................................................................................................................105
Summary Link Advertisements..................................................................................................................................105