Administrator Guide

Conguration Task List for Route Maps.................................................................................................................114
Conguring Match Routes.......................................................................................................................................116
Conguring Set Conditions...................................................................................................................................... 117
Congure a Route Map for Route Redistribution..................................................................................................118
Congure 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
Congure a Standard IP ACL.........................................................................................................................................121
Conguring a Standard IP ACL Filter..................................................................................................................... 122
Congure an Extended IP ACL..................................................................................................................................... 123
Conguring Filters with a Sequence Number....................................................................................................... 123
Conguring Filters Without a Sequence Number.................................................................................................124
Congure Layer 2 and Layer 3 ACLs............................................................................................................................125
Assign an IP ACL to an Interface..................................................................................................................................126
Applying an IP ACL.........................................................................................................................................................126
Counting ACL Hits....................................................................................................................................................127
Congure Ingress ACLs..................................................................................................................................................127
Congure Egress ACLs.................................................................................................................................................. 127
Applying Egress Layer 3 ACLs (Control-Plane).................................................................................................... 128
IP Prex Lists.................................................................................................................................................................. 129
Implementation Information.................................................................................................................................... 129
Conguration Task List for Prex Lists.................................................................................................................. 129
ACL Resequencing......................................................................................................................................................... 133
Resequencing an ACL or Prex List.......................................................................................................................133
Route Maps.....................................................................................................................................................................135
Implementation Information.................................................................................................................................... 135
Logging of ACL Processes............................................................................................................................................ 135
Guidelines for Conguring ACL Logging................................................................................................................136
Conguring ACL Logging.........................................................................................................................................136
Flow-Based Monitoring Support for ACLs.................................................................................................................. 137
Behavior of Flow-Based Monitoring.......................................................................................................................137
Enabling Flow-Based Monitoring............................................................................................................................138
Conguring UDF ACL.................................................................................................................................................... 139
Conguring IP Mirror Access Group............................................................................................................................ 142
Sample Conguration...............................................................................................................................................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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