Administrator Guide

Enabling four-byte autonomous system numbers..............................................................................................175
Changing a BGP router ID........................................................................................................................................176
Configuring AS4 Number Representations..........................................................................................................176
Configuring a BGP peer............................................................................................................................................177
Example-Configuring BGP routing between peers............................................................................................ 178
BGP peer group..........................................................................................................................................................179
Advanced BGP configuration tasks.............................................................................................................................186
Route-refresh and Soft-reconfiguration..............................................................................................................186
Aggregating Routes...................................................................................................................................................188
Filtering BGP...............................................................................................................................................................190
Configuring BGP Fast Fall-Over.............................................................................................................................195
Configuring Passive Peering....................................................................................................................................197
Enabling Graceful Restart........................................................................................................................................198
Redistributing Routes............................................................................................................................................... 199
Enabling Additional Paths........................................................................................................................................ 199
Configuring IP Community Lists............................................................................................................................200
Configuring an IP Extended Community List...................................................................................................... 201
Configure BGP attributes........................................................................................................................................202
Enabling Multipath.................................................................................................................................................... 206
Route Reflectors....................................................................................................................................................... 206
Enabling Route Flap Dampening............................................................................................................................ 207
Changing BGP keepalive and hold timers........................................................................................................... 209
Setting the extended timer..................................................................................................................................... 210
Enabling or disabling BGP neighbors.....................................................................................................................210
Route Map Continue................................................................................................................................................. 212
Configuring BGP Confederations...........................................................................................................................212
Configuring a BGP VRF address family................................................................................................................ 213
Maintaining Existing AS Numbers During an AS Migration..............................................................................214
Allowing an AS Number to Appear in its Own AS Path.................................................................................... 215
Enabling MBGP Configurations.............................................................................................................................. 215
MBGP support for IPv6............................................................................................................................................216
Configuring IPv6 MBGP between peers.............................................................................................................. 216
Example-Configuring IPv4 and IPv6 neighbors.................................................................................................. 217
Configure IPv6 NH Automatically for IPv6 Prefix Advertised over IPv4 Neighbor................................... 219
BGP Regular Expression Optimization.................................................................................................................220
Debugging BGP.......................................................................................................................................................... 221
Chapter 10: Content Addressable Memory (CAM)......................................................................223
CAM Allocation................................................................................................................................................................ 223
Test CAM Usage............................................................................................................................................................. 225
View CAM-ACL Settings...............................................................................................................................................225
View CAM Usage.............................................................................................................................................................227
Configuring CAM Threshold and Silence Period......................................................................................................227
CAM Optimization...........................................................................................................................................................228
Troubleshoot CAM Profiling......................................................................................................................................... 228
QoS CAM Region Limitation...................................................................................................................................228
Chapter 11: Control Plane Policing (CoPP)................................................................................ 230
Configure Control Plane Policing................................................................................................................................. 231
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