Concept Guide

Enabling Additional Paths....................................................................................................................................... 230
Conguring IP Community Lists............................................................................................................................. 231
Conguring an IP Extended Community List....................................................................................................... 232
Congure BGP attributes....................................................................................................................................... 233
Enabling Multipath................................................................................................................................................... 237
Route Reectors......................................................................................................................................................238
Enabling Route Flap Dampening............................................................................................................................ 239
Changing BGP keepalive and hold timers..............................................................................................................241
Setting the extended timer.....................................................................................................................................242
Enabling or disabling BGP neighbors.....................................................................................................................243
Route Map Continue............................................................................................................................................... 244
Conguring BGP Confederations.......................................................................................................................... 244
Conguring a BGP VRF address family................................................................................................................ 245
Maintaining Existing AS Numbers During an AS Migration................................................................................ 246
Allowing an AS Number to Appear in its Own AS Path.......................................................................................247
Enabling MBGP Congurations..............................................................................................................................248
MBGP support for IPv6..........................................................................................................................................248
Conguring IPv6 MBGP between peers.............................................................................................................. 249
Example-Conguring IPv4 and IPv6 neighbors................................................................................................... 249
Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 252
BGP Regular Expression Optimization..................................................................................................................253
Debugging BGP....................................................................................................................................................... 254
10 Content Addressable Memory (CAM)...................................................................................................... 256
CAM Allocation.............................................................................................................................................................. 256
Test CAM Usage............................................................................................................................................................258
View CAM-ACL Settings.............................................................................................................................................. 258
View CAM Usage...........................................................................................................................................................259
Conguring CAM Threshold and Silence Period........................................................................................................260
Setting CAM Threshold and Silence Period......................................................................................................... 260
CAM Optimization.......................................................................................................................................................... 261
Troubleshoot CAM Proling.......................................................................................................................................... 261
QoS CAM Region Limitation................................................................................................................................... 261
Syslog Error When the Table is Full........................................................................................................................ 261
Syslog Warning Upon 90 Percent Utilization of CAM.........................................................................................262
Syslog Warning for Discrepancies Between Congured Extended Prexes....................................................262
Unied Forwarding Table (UFT) Modes......................................................................................................................262
Conguring UFT Modes..........................................................................................................................................262
IPv6 CAM ACL Region..................................................................................................................................................263
Important Points to Remember............................................................................................................................. 263
Convert the IPv6 ACL CAM to Double-Wide.......................................................................................................263
Sharing CAM space between IPv4 QoS and IPv6 ACLs.................................................................................... 264
11 Control Plane Policing (CoPP).................................................................................................................. 265
Congure Control Plane Policing................................................................................................................................. 266
Conguring CoPP for Protocols.............................................................................................................................267
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