Implementation Information......................................................................................................109
Configuration Task List for Prefix Lists.......................................................................................109
ACL Resequencing.............................................................................................................................113
Resequencing an ACL or Prefix List............................................................................................113
Route Maps........................................................................................................................................115
Implementation Information.......................................................................................................115
Important Points to Remember........................................................................................................115
Configuration Task List for Route Maps......................................................................................115
Configuring Match Routes..........................................................................................................118
Configuring Set Conditions.........................................................................................................119
Configure a Route Map for Route Redistribution......................................................................120
Configure a Route Map for Route Tagging................................................................................121
Continue Clause..........................................................................................................................121
7 Bare Metal Provisioning (BMP).......................................................................123
Enhanced Behavior of the stop bmp Command.............................................................................123
Removal of User-Defined String Parameter in the reload-type Command...................................123
Service Tag Information in the Option 60 String.............................................................................123
8 Bidirectional Forwarding Detection (BFD).................................................. 124
How BFD Works................................................................................................................................124
BFD Packet Format......................................................................................................................125
BFD Sessions................................................................................................................................127
BFD Three-Way Handshake........................................................................................................127
Session State Changes................................................................................................................128
Important Points to Remember........................................................................................................129
Configure BFD...................................................................................................................................129
Configure BFD for Static Routes.................................................................................................130
Configure BFD for OSPF..............................................................................................................131
Configure BFD for OSPFv3..........................................................................................................135
Configure BFD for IS-IS...............................................................................................................136
Configure BFD for BGP...............................................................................................................139
Configure BFD for VRRP.............................................................................................................146
Configuring Protocol Liveness...................................................................................................149
9 Border Gateway Protocol IPv4 (BGPv4).......................................................150
Autonomous Systems (AS)................................................................................................................150
Sessions and Peers............................................................................................................................152
Establish a Session.......................................................................................................................153
Route Reflectors................................................................................................................................153
Communities...............................................................................................................................154
BGP Attributes...................................................................................................................................154