Users Guide

Configuring AS4 Number Representations...............................................................................................................162
Configuring Peer Groups.............................................................................................................................................163
Configuring BGP Fast Fall-Over.................................................................................................................................166
Configuring Passive Peering....................................................................................................................................... 167
Maintaining Existing AS Numbers During an AS Migration.....................................................................................168
Allowing an AS Number to Appear in its Own AS Path...........................................................................................168
Enabling Graceful Restart........................................................................................................................................... 169
Enabling Neighbor Graceful Restart.......................................................................................................................... 170
Filtering on an AS-Path Attribute...............................................................................................................................170
Regular Expressions as Filters..................................................................................................................................... 171
Redistributing Routes.................................................................................................................................................. 173
Enabling Additional Paths............................................................................................................................................ 173
Configuring IP Community Lists.................................................................................................................................173
Configuring an IP Extended Community List............................................................................................................174
Filtering Routes with Community Lists......................................................................................................................175
Manipulating the COMMUNITY Attribute.................................................................................................................176
Changing MED Attributes........................................................................................................................................... 177
Changing the LOCAL_PREFERENCE Attribute...................................................................................................... 177
Configuring the local System or a Different System to be the Next Hop for BGP-Learned Routes................178
Changing the WEIGHT Attribute................................................................................................................................178
Enabling Multipath........................................................................................................................................................179
Filtering BGP Routes................................................................................................................................................... 179
Filtering BGP Routes Using Route Maps..................................................................................................................180
Filtering BGP Routes Using AS-PATH Information................................................................................................. 180
Configuring BGP Route Reflectors.............................................................................................................................181
Aggregating Routes......................................................................................................................................................181
Configuring BGP Confederations...............................................................................................................................182
Enabling Route Flap Dampening.................................................................................................................................182
Changing BGP Timers................................................................................................................................................. 184
Enabling BGP Neighbor Soft-Reconfiguration.........................................................................................................185
Route Map Continue....................................................................................................................................................186
Enabling MBGP Configurations........................................................................................................................................186
BGP Regular Expression Optimization............................................................................................................................ 187
Debugging BGP.................................................................................................................................................................. 187
Storing Last and Bad PDUs........................................................................................................................................ 187
Capturing PDUs............................................................................................................................................................188
PDU Counters...............................................................................................................................................................189
Sample Configurations...................................................................................................................................................... 189
Chapter 10: Content Addressable Memory (CAM).......................................................................... 196
CAM Allocation...................................................................................................................................................................196
Test CAM Usage................................................................................................................................................................198
View CAM-ACL Settings.................................................................................................................................................. 198
View CAM Usage.............................................................................................................................................................. 200
CAM Optimization.............................................................................................................................................................200
Troubleshoot CAM Profiling............................................................................................................................................ 200
QoS CAM Region Limitation......................................................................................................................................200
Chapter 11: Control Plane Policing (CoPP)..................................................................................... 201
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