IP Prefix Lists......................................................................................................................................109Implementation Information...................................................................................................... 109Configuration Task List for Prefix Lists....................................................................................... 109ACL Resequencing.............................................................................................................................113Resequencing an ACL or Prefix List............................................................................................ 114Route Maps........................................................................................................................................ 115Implementation Information.......................................................................................................116Important Points to Remember........................................................................................................ 116Configuration Task List for Route Maps......................................................................................116Configuring Match Routes.......................................................................................................... 118Configuring Set Conditions........................................................................................................ 120Configure a Route Map for Route Redistribution.......................................................................121Configure a Route Map for Route Tagging................................................................................ 122Continue Clause.......................................................................................................................... 122Logging of ACL Processes................................................................................................................ 122Guidelines for Configuring ACL Logging......................................................................................... 123Configuring ACL Logging................................................................................................................. 124Flow-Based Monitoring Support for ACLs....................................................................................... 125Behavior of Flow-Based Monitoring...........................................................................................125Enabling Flow-Based Monitoring..................................................................................................... 1277 Access Control List (ACL) VLAN Groups and Content AddressableMemory (CAM)......................................................................................................129Optimizing CAM Utilization During the Attachment of ACLs to VLANs......................................... 129Guidelines for Configuring ACL VLAN groups.................................................................................130Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.........................131Configuring ACL VLAN Groups................................................................................................... 131Configuring FP Blocks for VLAN Parameters............................................................................. 132Viewing CAM Usage.......................................................................................................................... 133Allocating FP Blocks for VLAN Processes.........................................................................................1348 Bidirectional Forwarding Detection (BFD)...................................................136How BFD Works................................................................................................................................ 136BFD Packet Format...................................................................................................................... 137BFD Sessions................................................................................................................................139BFD Three-Way Handshake........................................................................................................139Session State Changes................................................................................................................ 140Important Points to Remember........................................................................................................ 141Configure BFD................................................................................................................................... 141Configure BFD for Physical Ports............................................................................................... 142Configure BFD for Static Routes.................................................................................................145Configure BFD for OSPF..............................................................................................................147
