, 349-353 clear xlate command, 391 changing sent hostname, 352 clear-channel DS3, 288 one-way authentication, 350 configuring, 293-294 two-way authentication, 351 framing, 292 chassis-based switches clear-channel T1, 270 6500 series, enhanced chassis, 210 clearing VTP password on CatOS installation, planning, 16-18 switches, 51 cooling, 17 CLI (command-line interpreter), CatOS and installing/removing modules, 17 IOS, 27 power, 16 client (VTP mode), 45 rack space, 16 CatOS, 50 routing cables, 18 setting on IOS switch, 50 layer-3 module to make switch client VLAN (CSM), 401 multilayer-capable, 197 clock (Cisco devices), 508 with older supervisor modules, router as clocking separate device, 198 DS3, 290 CIDR (Classless Internet Domain configuring, 296 Routing), 116, 490 T1, configuring, 284 CIR (committed information rate), 303 CMM (Communication Media Module), 222 cisco frame-relay encapsulation, 309 CO (central office), 257 class A networks, 114 code examples from this book, xvii class C networks, 114 collapsed-core networks class maps, 435-437 -no distribution, 474 applying to an interface, 438 -no distribution or access, 476 converged network, 448 collision domains, 8 Class of Service (see CoS) collisions, 8 class-based weighted fair queuing full-duplex/half-duplex links, 21 (CBWFQ), 426 half-duplex environments, 21 class-default class, 438 late, 9 converged network policy map, 448 port in half-duplex mode listening for, 85 queue too large in converged command-line interpreter (CLI), CatOS and network, 458 IOS, 27 Index committed information rate (CIR), 303 CoS (Class of Service), 244, 421, 424 Communication Media Module (CMM), 222 priority levels, 425 computer jerks, 541-544 costs for changing existing network conferencing services, 222 design, 526 congested networks, 440-446 costs, path, 73, 75 determining if network is counting to infinity, 107 congested, 440-445 couplers, 6 resolving, 445 CPE (customer premises equipment), 257 congestion avoidance, frame relay, 308 CPU utilization, show process cpu history c