Service Manual

Important Points to Remember.....................................................................................................................193
Configuration Information................................................................................................................................... 194
BGP Configuration................................................................................................................................................. 194
Enabling BGP..................................................................................................................................................... 195
Configuring AS4 Number Representations.................................................................................................198
Configuring Peer Groups................................................................................................................................199
Configuring BGP Fast Fall-Over....................................................................................................................202
Configuring Passive Peering.......................................................................................................................... 203
Maintaining Existing AS Numbers During an AS Migration..................................................................... 204
Allowing an AS Number to Appear in its Own AS Path............................................................................ 205
Enabling Graceful Restart...............................................................................................................................206
Enabling Neighbor Graceful Restart.............................................................................................................207
Filtering on an AS-Path Attribute.................................................................................................................. 207
Regular Expressions as Filters........................................................................................................................208
Redistributing Routes.......................................................................................................................................210
Enabling Additional Paths............................................................................................................................... 210
Configuring IP Community Lists....................................................................................................................211
Configuring an IP Extended Community List............................................................................................. 212
Filtering Routes with Community Lists........................................................................................................ 213
Manipulating the COMMUNITY Attribute.................................................................................................... 213
Changing MED Attributes................................................................................................................................215
Changing the LOCAL_PREFERENCE Attribute...........................................................................................215
Changing the NEXT_HOP Attribute..............................................................................................................216
Changing the WEIGHT Attribute................................................................................................................... 216
Enabling Multipath............................................................................................................................................217
Filtering BGP Routes.........................................................................................................................................217
Filtering BGP Routes Using Route Maps......................................................................................................218
Filtering BGP Routes Using AS-PATH Information....................................................................................219
Configuring BGP Route Reflectors............................................................................................................... 219
Aggregating Routes......................................................................................................................................... 220
Configuring BGP Confederations.................................................................................................................220
Enabling Route Flap Dampening...................................................................................................................221
Changing BGP Timers..................................................................................................................................... 223
Enabling BGP Neighbor Soft-Reconfiguration.......................................................................................... 224
Route Map Continue........................................................................................................................................225
Enabling MBGP Configurations...........................................................................................................................225
BGP Regular Expression Optimization.............................................................................................................. 226
Debugging BGP......................................................................................................................................................226
Storing Last and Bad PDUs.............................................................................................................................227
Capturing PDUs................................................................................................................................................ 228
PDU Counters................................................................................................................................................... 229
Sample Configurations......................................................................................................................................... 229
11 Content Addressable Memory (CAM)............................................................................................................ 235
CAM Allocation....................................................................................................................................................... 235
Test CAM Usage......................................................................................................................................................237
View CAM-ACL Settings........................................................................................................................................237
9.10(0.0)
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