Administrator Guide

Applying Egress Layer 3 ACLs (Control-Plane)................................................................ 139
IP Prefix Lists............................................................................................................................140
Implementation Information.......................................................................................... 141
Configuration Task List for Prefix Lists............................................................................... 141
Creating a Prefix List...............................................................................................................141
Creating a Prefix List Without a Sequence Number........................................................142
Viewing Prefix Lists.................................................................................................................143
Applying a Prefix List for Route Redistribution.................................................................144
Applying a Filter to a Prefix List (OSPF).............................................................................. 144
ACL Resequencing................................................................................................................. 145
Resequencing an ACL or Prefix List....................................................................................146
Route Maps.............................................................................................................................. 147
Implementation Information..........................................................................................147
Important Points to Remember.......................................................................................... 148
Configuration Task List for Route Maps............................................................................ 148
Creating a Route Map............................................................................................................148
Configure Route Map Filters................................................................................................ 150
Configuring Match Routes....................................................................................................151
Configuring Set Conditions..................................................................................................152
Configure a Route Map for Route Redistribution............................................................152
Configure a Route Map for Route Tagging.......................................................................153
Continue Clause..................................................................................................................... 154
Logging of ACL Processes....................................................................................................154
Guidelines for Configuring ACL Logging...........................................................................155
Configuring ACL Logging..................................................................................................... 156
Flow-Based Monitoring Support for ACLs........................................................................ 156
Behavior of Flow-Based Monitoring.............................................................................157
Enabling Flow-Based Monitoring........................................................................................159
9 Bidirectional Forwarding Detection (BFD).......................................................................161
How BFD Works......................................................................................................................162
BFD Packet Format...........................................................................................................163
BFD Sessions......................................................................................................................165
BFD Three-Way Handshake........................................................................................... 165
Session State Changes.....................................................................................................167
Important Points to Remember...........................................................................................167
Configure BFD........................................................................................................................ 168
Configure BFD for Physical Ports..................................................................................168
Enabling BFD Globally..................................................................................................... 168
Establishing a Session on Physical Ports..................................................................... 169
Changing Physical Port Session Parameters.............................................................. 170
Disabling and Re-Enabling BFD..................................................................................... 171
Configuration Guide
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