Users Guide

Changing MED Attributes....................................................................................................................................... 201
Changing the LOCAL_PREFERENCE Attribute.................................................................................................. 201
Conguring the local System or a Dierent System to be the Next Hop for BGP-Learned Routes............ 202
Changing the WEIGHT Attribute...........................................................................................................................203
Enabling Multipath...................................................................................................................................................203
Filtering BGP Routes...............................................................................................................................................203
Filtering BGP Routes Using Route Maps..............................................................................................................205
Filtering BGP Routes Using AS-PATH Information............................................................................................. 205
Conguring BGP Route Reectors....................................................................................................................... 206
Aggregating Routes................................................................................................................................................. 207
Conguring BGP Confederations...........................................................................................................................207
Enabling Route Flap Dampening............................................................................................................................ 208
Changing BGP Timers............................................................................................................................................. 210
Enabling BGP Neighbor Soft-Reconguration..................................................................................................... 210
Enabling or disabling BGP neighbors...................................................................................................................... 211
Route Map Continue................................................................................................................................................213
Enabling MBGP Congurations.................................................................................................................................... 213
Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor.......................................... 214
BGP Regular Expression Optimization.........................................................................................................................214
Debugging BGP.............................................................................................................................................................. 214
Storing Last and Bad PDUs.....................................................................................................................................215
Capturing PDUs........................................................................................................................................................216
PDU Counters........................................................................................................................................................... 217
Sample Congurations................................................................................................................................................... 217
10 Content Addressable Memory (CAM).......................................................................................................224
CAM Allocation...............................................................................................................................................................224
Test CAM Usage............................................................................................................................................................226
View CAM-ACL Settings.............................................................................................................................................. 226
View CAM Usage...........................................................................................................................................................228
CAM Optimization......................................................................................................................................................... 228
Troubleshoot CAM Proling..........................................................................................................................................228
QoS CAM Region Limitation...................................................................................................................................228
11 Control Plane Policing (CoPP).................................................................................................................. 229
Congure Control Plane Policing................................................................................................................................. 230
Conguring CoPP for Protocols............................................................................................................................. 231
Conguring CoPP for CPU Queues...................................................................................................................... 233
CoPP for OSPFv3 Packets.....................................................................................................................................234
Conguring CoPP for OSPFv3...............................................................................................................................237
Displaying CoPP Conguration ..............................................................................................................................237
12 Dynamic Host Conguration Protocol (DHCP)......................................................................................... 240
DHCP Packet Format and Options............................................................................................................................. 240
Assign an IP Address using DHCP...............................................................................................................................242
Implementation Information..........................................................................................................................................243
8
Contents