Administrator Guide

Filtering on an AS-Path Attribute................................................................................................ 197
Regular Expressions as Filters..................................................................................................... 199
Redistributing Routes................................................................................................................. 200
Enabling Additional Paths........................................................................................................... 201
Configuring IP Community Lists.................................................................................................201
Configuring an IP Extended Community List............................................................................ 203
Filtering Routes with Community Lists......................................................................................204
Manipulating the COMMUNITY Attribute.................................................................................. 204
Changing MED Attributes...........................................................................................................206
Changing the LOCAL_PREFERENCE Attribute..........................................................................206
Changing the NEXT_HOP Attribute........................................................................................... 207
Changing the WEIGHT Attribute................................................................................................208
Enabling Multipath......................................................................................................................208
Filtering BGP Routes...................................................................................................................208
Filtering BGP Routes Using Route Maps.................................................................................... 210
Filtering BGP Routes Using AS-PATH Information.....................................................................211
Configuring BGP Route Reflectors............................................................................................. 211
Aggregating Routes.....................................................................................................................212
Configuring BGP Confederations...............................................................................................213
Enabling Route Flap Dampening................................................................................................ 213
Changing BGP Timers.................................................................................................................216
Enabling BGP Neighbor Soft-Reconfiguration.......................................................................... 216
Route Map Continue...................................................................................................................218
Enabling MBGP Configurations........................................................................................................ 218
BGP Regular Expression Optimization............................................................................................. 219
Debugging BGP.................................................................................................................................219
Storing Last and Bad PDUs.........................................................................................................220
Capturing PDUs........................................................................................................................... 221
PDU Counters............................................................................................................................. 222
Sample Configurations..................................................................................................................... 223
10 Content Addressable Memory (CAM).........................................................229
CAM Allocation................................................................................................................................. 229
Test CAM Usage................................................................................................................................ 231
View CAM Profiles............................................................................................................................. 231
View CAM-ACL Settings................................................................................................................... 232
View CAM Usage...............................................................................................................................234
CAM Optimization.............................................................................................................................235
Troubleshoot CAM Profiling.............................................................................................................235
CAM Profile Mismatches.............................................................................................................235
QoS CAM Region Limitation.......................................................................................................235