Index D

C

cable media, 46-47

Ethernet. See Ethernet networks and media

switched Ethernet, 48

cable modems, 473

cable range, 473

cabling switch blocks, 55-58

CAC (Connection Admission Control), 473

cache aging time, 260

cache entries in MLS, 247-249, 259-262

displaying, 262

removing, 263

caches

in fast switching, 266-267

in optimum switching, 267

call admission control, 474

call managers, 119

call priority, 474

call set-up time, 474

CAM (Content Addressable Memory) and CAM tables

for bridging tables, 406-407

in CGMP, 301

defined, 474

in MLS

candidate packet identification, 248

discovery, 246-247

enable packet identification, 249

Campus Module, 29-30, 30

campus networks, 2-3

exam essentials for, 32-33

key terms for, 33

new, 8-10

building blocks in. See building blocks

Catalyst products in, 20-22

hierarchical model in, 16-19, 18-19

SAFE in, 29-31, 29-31

switching technologies in. See switching technologies

performance problems and solutions, 4-6

review questions for, 36-39, 42-43

summary, 32

traditional, 3-4

20/80 rule in, 7, 7

80/20 rule in, 6-7, 6

bandwidth in, 4-5

broadcasts and multicasts in, 5-6

collisions in, 4

performance problems and solutions in, 4-6

VLANS in, 8, 8

written labs for, 34-35, 40-41

candidate packets

defined, 474

identification of, 248-249, 248

Canonical Format Indicator (CFI), 102

Carrier Detect (CD) signal, 474

Carrier Sense Multiple Access/Collision Detection (CSMA/CD) protocol

in 10BaseT, 49

defined, 479

Catalyst IOS (CatIOS) switches, 20

Catalyst Operating System (CatOS), 20

Catalyst products, 20

access layer switches, 20-21

core layer switches, 22

distribution layer switches, 21

in multicast routing, 330-331

CatOS operating system, 412, 474

CBR (Constant Bit Rate), 474

CBTs (core-based trees), 313-314, 313-314

Cbus in process switching, 266

CCDA certification, xxiv

CCDP certification, xxiv

CCIE certification, xxvi

CCIP certification, xxiii

CCNA certification, xx

CCNP certification, xx-xxii

CCSP certification, xxiv-xxv

CD (Carrier Detect) signal, 474

CD that accompanies this book, xxx

CDP (Cisco Discovery Protocol)

defined, 474

hostnames with, 62

CDVT (Cell Delay Variation Tolerance), 474

CEF (Cisco Express Forwarding), 20, 264-265

configuring, 269-270

defined, 474

fast switching in, 266-267, 267

forwarding process in, 268-269, 268

with layer 3 switching, 265

optimum switching in, 267, 268

process switching in, 266, 266

Cell Delay Variation Tolerance (CDVT), 474

Cell Loss Priority (CLP), 477

Cell Loss Ratio (CLR), 477

cell payload scrambling, 474

cell relay, 474

Cell Transfer Delay (CTD), 479

cells, 474

Central Office (CO), 477

centralized applications, 9

Centrex service, 475

CER (Cell Error Ratio), 475

CFI (Canonical Format Indicator), 102

CGMP (Cisco Group Management Protocol), 299-300

defined, 475

host management process in, 301

join process in, 300, 300

router configuration for, 329-330

Challenge Handshake Authentication Protocol (CHAP), 475

challenges in authentication, 475

channel-group command, 184, 216

Channel Interface Processor (CIP), 475

Channel Service Unit (CSU), 479

channelized E1, 475

channelized T1, 475

CHAP (Challenge Handshake Authentication Protocol), 475

character mode connections, 475

checksums, 475

choke packets, 475

CIDR (Classless Interdomain Routing), 475

CIP (Channel Interface Processor), 475

CIR (Committed Information Rate), 475

circuit switching, 475

Cisco Certified Design Associate certification, xxiv

Cisco Certified Design Professional certification, xxiv

Cisco Certified Internetwork Expert certification, xxvi

Cisco Certified Internetwork Professional certification, xxiii

Cisco Certified Network Associate certification, xx

Cisco Certified Network Professional certification, xx-xxii

Cisco Certified Security Professional certification, xxiv-xxv

Cisco Discovery Protocol (CDP)

defined, 474

hostnames with, 62

Cisco Express Forwarding. See CEF (Cisco Express Forwarding)

Cisco Firewall Specialist certification, xxv

Cisco FRAD (Cisco Frame-Relay Access Device), 476

Cisco Group Management Protocol (CGMP), 299-300

defined, 475

host management process in, 301

join process in, 300, 300

router configuration for, 329-330

Cisco hierarchical model, 16-17, 18-19

access layer in, 19

core layer in, 18-19

defined, 476

distribution layer in, 19

Cisco IDS Specialist certification, xxv

Cisco IOS software, 476

Cisco VPN Specialist certification, xxv

CiscoFusion architecture, 476

CiscoView program, 476

Class A networks, 476

Class B networks, 476

Class C networks, 476

Class D networks, multicast address listing for, 451-454

class-map command, 365

class-map match-all command, 367

class-map match-any command, 367

classical IP over ATM, 476

classification

defined, 476

in DiffServ model, 359, 361

Classless Interdomain Routing (CIDR), 475

classless routing, 476

clear config command, 72

clear config all command, 72, 108, 117, 182

clear ip route command, 252

clear mls entry command, 263

clear mls entry destination command, 263

clear trunk command, 105

clear vlan command, 104

clear vtp pruneeligible command, 118

clearing VLANs from trunk links, 105-106

CLI (command-line interface), 55, 476

client mode in VTP, 109-110-, 109

clocking, 476

CLP (Cell Loss Priority), 477

CLR (Cell Loss Ratio), 477

CMS (Cluster Management Suite), 413, 415, 421

CO (Central Office), 477

collapsed backbones

defined, 477

for VLANs, 91, 91-92

collapsed cores

defined, 477

functions of, 24-25, 25

collision domains, 477

collision free Ethernet, 51

collisions

in campus networks, 4

defined, 477

command-line interface (CLI), 55, 476

command summary, 434-439

Committed Information Rate (CIR), 475

Common Part Convergence Sublayer (CPCS), 479

Common Spanning Tree (CST), 164, 479

composite metrics, 477

compression, 477

config-subif command, 213

configuration registers, 477

configuration revision numbers in VTP, 111-112, 112

congestion

in campus networks, 5

defined, 477

congestion avoidance, 477

congestion collapse, 477

connecting

to console ports, 55-56

to Ethernet ports, 56

Connection Admission Control (CAC), 473

connection IDs, 478

connection-oriented data transfer

in best efforts networks, 355

defined, 478

connection sequence in connection-oriented transport, 355

connectionless transport

in best efforts networks, 356

defined, 478

connectivity verification, 69

for 2950 and 3550 switches, 70

for 4000 switches, 69

troubleshooting, 70

consistency checks, 113

console ports

connecting to, 55-56

defined, 478

Console> prompt, 56

Constant Bit Rate (CBR), 474

constant queuing, 479

Content Addressable Memory (CAM) and CAM tables

for bridging tables, 406-407

in CGMP, 301

defined, 474

in MLS

candidate packet identification, 248

discovery, 246-247

enable packet identification, 249

content media, 478

contention media, 46

contiguous buffers, 408-410, 478

control direct VCC connections, 478

control distribute VCC connections, 478

convergence

in campus networks, 9

defined, 478

in Fast EtherChannel links, 180

in layer 3 backbones, 28

in spanning tree operation, 146

in UplinkFast, 189-190

copy running-config command, 70

copy startup-config command, 70

copy tftp flash command, 72

core-based trees (CBTs), 313-314, 313-314

core blocks, 23-24, 24

collapsed cores, 24-25, 25

defined, 478

dual cores, 25, 26

size, 25-26

core layer

defined, 478

in hierarchical model, 18-19, 18

switches for, 22

Core Module, 30, 31, 53

cost, 478

count to infinity, 479

CPCS (Common Part Convergence Sublayer), 479

CPE (Customer Premises Equipment), 479

CPU usage indicator, 150

crankback technique, 479

CRC (cyclic redundancy check), 149, 479

crossbar switching fabrics, 406, 406

crossbars

defined, 479

for non-blocking switches, 404

CSMA/CD (Carrier Sense Multiple Access/ Collision Detection) protocol

in 10BaseT, 49

defined, 479

CST (Common Spanning Tree), 164, 479

CSU (Channel Service Unit), 479

CTD (Cell Transfer Delay), 479

custom-queue-list command, 373

Custom Queuing, 363, 371-374

Customer Premises Equipment (CPE), 479

cut-through switch type, 149, 480

cyclic redundancy check (CRC), 149, 479