Administrator Guide

Configuration Task List for Route Maps................................................................................................................114
Configuring Match Routes.......................................................................................................................................116
Configuring Set Conditions...................................................................................................................................... 117
Configure a Route Map for Route Redistribution.................................................................................................118
Configure a Route Map for Route Tagging........................................................................................................... 119
Continue Clause........................................................................................................................................................ 119
IP Fragment Handling.................................................................................................................................................... 120
IP Fragments ACL Examples.................................................................................................................................. 120
Layer 4 ACL Rules Examples.................................................................................................................................. 120
Configure a Standard IP ACL........................................................................................................................................ 121
Configuring a Standard IP ACL Filter.....................................................................................................................122
Configure an Extended IP ACL.....................................................................................................................................123
Configuring Filters with a Sequence Number.......................................................................................................123
Configuring Filters Without a Sequence Number................................................................................................ 124
Configure Layer 2 and Layer 3 ACLs...........................................................................................................................125
Assign an IP ACL to an Interface................................................................................................................................. 126
Applying an IP ACL.........................................................................................................................................................126
Counting ACL Hits....................................................................................................................................................127
Configure Ingress ACLs................................................................................................................................................. 127
Configure Egress ACLs..................................................................................................................................................127
Applying Egress Layer 3 ACLs (Control-Plane)................................................................................................... 128
IP Prefix Lists..................................................................................................................................................................129
Implementation Information....................................................................................................................................129
Configuration Task List for Prefix Lists................................................................................................................. 129
ACL Resequencing.........................................................................................................................................................133
Resequencing an ACL or Prefix List...................................................................................................................... 133
Route Maps.....................................................................................................................................................................135
Implementation Information....................................................................................................................................135
Logging of ACL Processes............................................................................................................................................135
Guidelines for Configuring ACL Logging............................................................................................................... 136
Configuring ACL Logging........................................................................................................................................ 136
Flow-Based Monitoring Support for ACLs..................................................................................................................137
Behavior of Flow-Based Monitoring...................................................................................................................... 137
Enabling Flow-Based Monitoring............................................................................................................................139
Configuring UDF ACL.................................................................................................................................................... 140
Configuring IP Mirror Access Group............................................................................................................................142
Sample Configuration...............................................................................................................................................143
Example of viewing IP mirror–access–group applied to an Interface...............................................................143
8 Bidirectional Forwarding Detection (BFD)..................................................................................................144
How BFD Works.............................................................................................................................................................144
BFD Packet Format................................................................................................................................................. 145
BFD Sessions............................................................................................................................................................ 146
BFD Three-Way Handshake....................................................................................................................................147
Session State Changes............................................................................................................................................149
Important Points to Remember....................................................................................................................................149
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