Administrator Guide

Redistributing Routes..............................................................................................................................................205
Enabling Additional Paths....................................................................................................................................... 206
Conguring IP Community Lists............................................................................................................................ 206
Conguring an IP Extended Community List....................................................................................................... 207
Filtering Routes with Community Lists................................................................................................................. 208
Manipulating the COMMUNITY Attribute............................................................................................................209
Changing MED Attributes....................................................................................................................................... 210
Changing the LOCAL_PREFERENCE Attribute.................................................................................................. 210
Conguring the local System or a Dierent System to be the Next Hop for BGP-Learned Routes.............. 211
Changing the WEIGHT Attribute............................................................................................................................212
Enabling Multipath....................................................................................................................................................212
Filtering BGP Routes................................................................................................................................................212
Filtering BGP Routes Using Route Maps...............................................................................................................214
Filtering BGP Routes Using AS-PATH Information.............................................................................................. 214
Conguring BGP Route Reectors........................................................................................................................ 215
Aggregating Routes..................................................................................................................................................216
Conguring BGP Confederations...........................................................................................................................216
Enabling Route Flap Dampening............................................................................................................................. 217
Changing BGP Timers..............................................................................................................................................219
Enabling BGP Neighbor Soft-Reconguration..................................................................................................... 219
Enabling or disabling BGP neighbors.....................................................................................................................220
Route Map Continue............................................................................................................................................... 222
Enabling MBGP Congurations................................................................................................................................... 222
Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 223
BGP Regular Expression Optimization........................................................................................................................ 223
Debugging BGP..............................................................................................................................................................223
Storing Last and Bad PDUs....................................................................................................................................224
Capturing PDUs....................................................................................................................................................... 225
PDU Counters.......................................................................................................................................................... 226
Sample Congurations.................................................................................................................................................. 226
9 Content Addressable Memory (CAM)........................................................................................................ 235
CAM Allocation.............................................................................................................................................................. 235
Test CAM Usage............................................................................................................................................................ 237
View CAM-ACL Settings...............................................................................................................................................237
View CAM Usage...........................................................................................................................................................238
Return to the Default CAM Conguration..................................................................................................................238
CAM Optimization......................................................................................................................................................... 239
Applications for CAM Proling..................................................................................................................................... 239
LAG HashingLAG Hashing Based on Bidirectional Flow..................................................................................... 239
Unied Forwarding Table (UFT) Modes......................................................................................................................239
Conguring UFT Modes..........................................................................................................................................240
10 Control Plane Policing (CoPP).................................................................................................................. 241
CoPP Implementation.................................................................................................................................................... 241
Protocol-based Control Plane Policing...................................................................................................................241
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