Regular Expressions as Filters................................................................................................................................206Redistributing Routes.............................................................................................................................................. 207Enabling Additional Paths....................................................................................................................................... 208Configuring IP Community Lists............................................................................................................................ 208Configuring an IP Extended Community List....................................................................................................... 209Filtering Routes with Community Lists.................................................................................................................. 210Manipulating the COMMUNITY Attribute..............................................................................................................211Changing MED Attributes....................................................................................................................................... 212Changing the LOCAL_PREFERENCE Attribute...................................................................................................212Configuring the local System or a Different System to be the Next Hop for BGP-Learned Routes............. 213Changing the WEIGHT Attribute............................................................................................................................214Enabling Multipath....................................................................................................................................................214Filtering BGP Routes................................................................................................................................................214Filtering BGP Routes Using Route Maps...............................................................................................................216Filtering BGP Routes Using AS-PATH Information.............................................................................................. 216Configuring BGP Route Reflectors.........................................................................................................................217Aggregating Routes..................................................................................................................................................218Configuring BGP Confederations........................................................................................................................... 218Enabling Route Flap Dampening.............................................................................................................................219Changing BGP Timers..............................................................................................................................................221Enabling BGP Neighbor Soft-Reconfiguration......................................................................................................221Enabling or disabling BGP neighbors.....................................................................................................................222Route Map Continue............................................................................................................................................... 224Enabling MBGP Configurations....................................................................................................................................224Configure IPv6 NH Automatically for IPv6 Prefix Advertised over IPv4 Neighbor......................................... 225BGP Regular Expression Optimization........................................................................................................................ 225Debugging BGP............................................................................................................................................................. 225Storing Last and Bad PDUs....................................................................................................................................226Capturing PDUs....................................................................................................................................................... 227PDU Counters.......................................................................................................................................................... 228Sample Configurations.................................................................................................................................................. 22810 Content Addressable Memory (CAM).......................................................................................................235CAM Allocation.............................................................................................................................................................. 235Test CAM Usage............................................................................................................................................................ 237View CAM-ACL Settings...............................................................................................................................................237View CAM Usage...........................................................................................................................................................239CAM Optimization......................................................................................................................................................... 239Troubleshoot CAM Profiling..........................................................................................................................................239QoS CAM Region Limitation...................................................................................................................................23911 Control Plane Policing (CoPP)...................................................................................................................241Configure Control Plane Policing................................................................................................................................. 242Configuring CoPP for Protocols.............................................................................................................................243Configuring CoPP for CPU Queues...................................................................................................................... 245CoPP for OSPFv3 Packets.....................................................................................................................................2468 Contents