Reference Guide

Filtering on an AS-Path Attribute................................................................................................196
Regular Expressions as Filters..................................................................................................... 198
Redistributing Routes..................................................................................................................199
Enabling Additional Paths...........................................................................................................200
Configuring IP Community Lists................................................................................................200
Configuring an IP Extended Community List............................................................................ 202
Filtering Routes with Community Lists...................................................................................... 203
Manipulating the COMMUNITY Attribute.................................................................................. 203
Changing MED Attributes........................................................................................................... 205
Changing the LOCAL_PREFERENCE Attribute.......................................................................... 205
Changing the NEXT_HOP Attribute...........................................................................................206
Changing the WEIGHT Attribute................................................................................................ 207
Enabling Multipath...................................................................................................................... 207
Filtering BGP Routes................................................................................................................... 207
Filtering BGP Routes Using Route Maps....................................................................................209
Filtering BGP Routes Using AS-PATH Information.................................................................... 210
Configuring BGP Route Reflectors.............................................................................................210
Aggregating Routes..................................................................................................................... 211
Configuring BGP Confederations...............................................................................................212
Enabling Route Flap Dampening................................................................................................ 212
Changing BGP Timers................................................................................................................. 215
Enabling BGP Neighbor Soft-Reconfiguration...........................................................................215
Route Map Continue................................................................................................................... 217
Enabling MBGP Configurations........................................................................................................ 217
BGP Regular Expression Optimization............................................................................................. 218
Debugging BGP.................................................................................................................................218
Storing Last and Bad PDUs......................................................................................................... 219
Capturing PDUs.......................................................................................................................... 220
PDU Counters..............................................................................................................................221
Sample Configurations......................................................................................................................221
10 Content Addressable Memory (CAM).........................................................228
CAM Allocation................................................................................................................................. 228
Test CAM Usage................................................................................................................................230
View CAM-ACL Settings................................................................................................................... 230
View CAM Usage...............................................................................................................................232
CAM Optimization............................................................................................................................ 233
Troubleshoot CAM Profiling.............................................................................................................233
CAM Profile Mismatches.............................................................................................................233
QoS CAM Region Limitation.......................................................................................................234
Syslog Error When the Table is Full............................................................................................234
Syslog Warning Upon 90 Percent Utilization of CAM............................................................... 234
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