Administrator Guide

Enabling four-byte autonomous system numbers................................................................................................... 170
Changing a BGP router ID............................................................................................................................................171
Configuring AS4 Number Representations................................................................................................................171
Configuring a BGP peer...............................................................................................................................................172
Example-Configuring BGP routing between peers..................................................................................................173
BGP peer group............................................................................................................................................................174
Advanced BGP configuration tasks..................................................................................................................................181
Route-refresh and Soft-reconfiguration....................................................................................................................181
Aggregating Routes..................................................................................................................................................... 183
Filtering BGP.................................................................................................................................................................185
Configuring BGP Fast Fall-Over.................................................................................................................................190
Configuring Passive Peering........................................................................................................................................191
Enabling Graceful Restart........................................................................................................................................... 192
Redistributing Routes.................................................................................................................................................. 193
Enabling Additional Paths............................................................................................................................................193
Configuring IP Community Lists.................................................................................................................................194
Configuring an IP Extended Community List............................................................................................................195
Configure BGP attributes........................................................................................................................................... 196
Enabling Multipath....................................................................................................................................................... 199
Route Reflectors......................................................................................................................................................... 200
Enabling Route Flap Dampening.................................................................................................................................201
Changing BGP keepalive and hold timers................................................................................................................ 203
Setting the extended timer........................................................................................................................................203
Enabling or disabling BGP neighbors........................................................................................................................ 204
Route Map Continue...................................................................................................................................................205
Configuring BGP Confederations..............................................................................................................................205
Configuring a BGP VRF address family....................................................................................................................206
Maintaining Existing AS Numbers During an AS Migration....................................................................................207
Allowing an AS Number to Appear in its Own AS Path..........................................................................................208
Enabling MBGP Configurations.................................................................................................................................209
MBGP support for IPv6..............................................................................................................................................209
Configuring IPv6 MBGP between peers..................................................................................................................209
Example-Configuring IPv4 and IPv6 neighbors........................................................................................................210
Configure IPv6 NH Automatically for IPv6 Prefix Advertised over IPv4 Neighbor............................................. 212
BGP Regular Expression Optimization...................................................................................................................... 213
Debugging BGP............................................................................................................................................................ 214
10 Content Addressable Memory (CAM)........................................................................................ 216
CAM Allocation...................................................................................................................................................................216
Test CAM Usage................................................................................................................................................................217
View CAM-ACL Settings.................................................................................................................................................. 218
View CAM Usage...............................................................................................................................................................219
Configuring CAM Threshold and Silence Period........................................................................................................... 220
CAM Optimization..............................................................................................................................................................221
Troubleshoot CAM Profiling............................................................................................................................................. 221
QoS CAM Region Limitation.......................................................................................................................................221
11 Control Plane Policing (CoPP).................................................................................................. 222
Configure Control Plane Policing.....................................................................................................................................223
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