Concept Guide

Enabling Additional Paths........................................................................................................................................233
Conguring IP Community Lists............................................................................................................................ 234
Conguring an IP Extended Community List....................................................................................................... 235
Congure BGP attributes....................................................................................................................................... 236
Enabling Multipath...................................................................................................................................................240
Route Reectors.......................................................................................................................................................241
Enabling Route Flap Dampening............................................................................................................................ 242
Changing BGP keepalive and hold timers.............................................................................................................244
Setting the extended timer.................................................................................................................................... 245
Enabling or disabling BGP neighbors.....................................................................................................................246
Route Map Continue............................................................................................................................................... 247
Conguring BGP Confederations...........................................................................................................................247
Conguring a BGP VRF address family.................................................................................................................248
Maintaining Existing AS Numbers During an AS Migration................................................................................ 249
Allowing an AS Number to Appear in its Own AS Path...................................................................................... 250
Enabling MBGP Congurations.............................................................................................................................. 251
MBGP support for IPv6...........................................................................................................................................251
Conguring IPv6 MBGP between peers.............................................................................................................. 252
Example-Conguring IPv4 and IPv6 neighbors................................................................................................... 253
Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 255
BGP Regular Expression Optimization.................................................................................................................. 257
Debugging BGP........................................................................................................................................................257
10 Content Addressable Memory (CAM)...................................................................................................... 260
CAM Allocation.............................................................................................................................................................. 260
Test CAM Usage............................................................................................................................................................262
View CAM-ACL Settings.............................................................................................................................................. 262
View CAM Usage...........................................................................................................................................................263
Conguring CAM Threshold and Silence Period........................................................................................................264
Setting CAM Threshold and Silence Period......................................................................................................... 264
CAM Optimization......................................................................................................................................................... 265
Troubleshoot CAM Proling..........................................................................................................................................265
QoS CAM Region Limitation...................................................................................................................................265
Syslog Error When the Table is Full....................................................................................................................... 266
Syslog Warning Upon 90 Percent Utilization of CAM.........................................................................................266
Syslog Warning for Discrepancies Between Congured Extended Prexes....................................................266
Unied Forwarding Table (UFT) Modes..................................................................................................................... 266
Conguring UFT Modes......................................................................................................................................... 266
IPv6 CAM ACL Region.................................................................................................................................................. 267
Important Points to Remember..............................................................................................................................267
Convert the IPv6 ACL CAM to Double-Wide.......................................................................................................268
Sharing CAM space between IPv4 QoS and IPv6 ACLs.................................................................................... 268
11 Control Plane Policing (CoPP).................................................................................................................. 270
Congure Control Plane Policing.................................................................................................................................. 271
Conguring CoPP for Protocols.............................................................................................................................272
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