Users Guide

Important Points to Remember.................................................................................................................................... 130
Conguration Task List for Route Maps...................................................................................................................... 130
Creating a Route Map.....................................................................................................................................................131
Congure Route Map Filters......................................................................................................................................... 132
Conguring Match Routes............................................................................................................................................ 133
Conguring Set Conditions........................................................................................................................................... 133
Congure a Route Map for Route Redistribution.......................................................................................................134
Congure a Route Map for Route Tagging................................................................................................................. 135
Continue Clause..............................................................................................................................................................135
Logging of ACL Processes............................................................................................................................................ 135
Guidelines for Conguring ACL Logging......................................................................................................................136
Conguring ACL Logging...............................................................................................................................................137
Flow-Based Monitoring Support for ACLs.................................................................................................................. 137
Behavior of Flow-Based Monitoring.......................................................................................................................137
Enabling Flow-Based Monitoring..................................................................................................................................139
9 Bidirectional Forwarding Detection (BFD)...................................................................................................141
How BFD Works.............................................................................................................................................................. 141
BFD Packet Format..................................................................................................................................................142
BFD Sessions............................................................................................................................................................ 143
BFD Three-Way Handshake.................................................................................................................................... 144
Session State Changes............................................................................................................................................146
Important Points to Remember.................................................................................................................................... 146
Congure BFD................................................................................................................................................................ 146
Congure BFD for Physical Ports...........................................................................................................................147
Enabling BFD Globally.............................................................................................................................................. 147
Changing Physical Port Session Parameters........................................................................................................ 148
Disabling and Re-Enabling BFD.............................................................................................................................. 148
Congure BFD for Static Routes..................................................................................................................................149
Related Conguration Tasks....................................................................................................................................149
Establishing Sessions for Static Routes.................................................................................................................149
Establishing Static Route Sessions on Specic Neighbors................................................................................. 150
Changing Static Route Session Parameters.......................................................................................................... 151
Disabling BFD for Static Routes.............................................................................................................................. 151
Congure BFD for OSPF................................................................................................................................................151
Related Conguration Tasks....................................................................................................................................152
Establishing Sessions with OSPF Neighbors........................................................................................................ 152
Establishing Sessions with OSPF Neighbors for nondefault VRFs....................................................................153
Changing OSPF Session Parameters.....................................................................................................................154
Disabling BFD for OSPF.......................................................................................................................................... 154
Congure BFD for OSPFv3...........................................................................................................................................154
Related Conguration Tasks....................................................................................................................................155
Establishing Sessions with OSPFv3 Neighbors....................................................................................................155
Establishing BFD Sessions with OSPFv3 Neighbors for nondefault VRFs....................................................... 155
Changing OSPFv3 Session Parameters................................................................................................................ 156
Disabling BFD for OSPFv3.......................................................................................................................................157
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