tication, 348 port security, 238 PPTP (Point-to-Point Tunneling port speed (frame relay), 302 Protocol), 162 port translation using SLB, 400 preemption, configuring in CSM fault PortFast, 80 tolerance, 401 port-object object-group commands, 374 Index prefix, 94, 127 propagation delay, 261 host route, 97 pruning, VTP, 46 route with longest prefix length, 94 configuring, 51-54 PRI (Primary Rate Interface), 260, 270 public VS. private IP space, 484-487 primary CSM, 401 PVCs (permanent virtual circuits), 299 configuring IP address, 402 assigned to subinterfaces, status of, 319 replicating changes to secondary configured as subinterfaces, 305 CSM, 408 configuring virtual interfaces for each primary PIX firewall, 377 PVC, 314 failure of, showing, 382 mapped to interfaces, reporting on, 319 interface configuration, 381 show frame-relay PVC command, 309 priorities PVST (Per-VLAN Spanning Tree), 77 fault tolerance in CSMs, 401 decrementing, 168 influencing based on status of another QoS (Quality of Service), 247-249, 417-429 interface, 167 changing values with route maps, 173 PIX firewall interfaces, 370 common misconceptions, 427 configuring, 370 designing a scheme, 430-439 QoS, 422-425 bandwidth requirements for protocols, deciding whether traffic should be determining, 433-435 prioritized, 421 configuring the routers, 435-439 determining, 431 priorities, determining, 431 marking packets, 422 protocol requirements, priority levels for different QoS determining, 430 mechanics of, 422 types, 425 root bridge, 74 monitoring on converged router interface network, 449-452 OSPF, 123 packet types, 419 standby, 165 packets through serial interface, 420 priority command (in QoS policy maps), 437 priorities, 422-425 priority queue reasons for using, 420 converged network, too large, 455 resolution of congested network too small in converged network, 454 problem, 445 priority queuing, 426 types of, 421, 426 private branch exchange (PBX), 264 queuing, 421 privilege levels, 345 converged network problem isolation in troubleshooting, 