Index_T

T

T1, 585

T3, 585

TACACS+ (Terminal Access Controller Access Control System Plus), 585

tag switching, 585

tagged traffic, 586

TCP (Transmission Control Protocol),125, 586

access lists to permit or deny ports, 408–409

vs. UDP, 126

TCP/IP (Transmission Control Protocol/ Internet Protocol), 120–131, 586

and DOD model, 122

exam essentials, 142–143

window sizes, 26

TDM (time-division multiplexing), 586

TE (terminal equipment), 586

TE1, 586

technical data, for network evaluation, 159

telco, 586

Telnet, 123, 586

Terminal Access Controller Access Control System Plus (TACAC+), 585

terminal adapter, 586

terminal emulation, 586

terminal equipment (TE), 586

terminal ip netmask-format command,282–283

testing, 463

in prototype development, 465

TFTP, 587

Thicknet, 38

thin protocol, 126

Thinnet, 38

thrashing, 79, 587

three-part firewall, 587

in case study, 509

tie-lines, 493, 587

TIFF (Tagged Image File Format), 19

time-division multiplexing (TDM), 586

time intervals, for OSPF, 358

time slots, 104

Time to live (TTL), 588

exceeding, 320

timers, in IGRP, 328

token, 587

token bus, 587

token passing, 587

MAC sublayer and, 33

Token Ring, 43–45, 587

bridging between Ethernet and, 392

Token Ring group in RMON, 440

Token Ring Interface Processor (TRIP), 588

topology database, 322

in EIGRP, 334

in OSPF, 357

topology of networks, 163, 164, 190, 564. See also Enterprise Composite Network Model

exam essentials, 207–208

fault-tolerance, 200–206

redundant LAN configurations, 200–203

redundant WAN connections, 203–205

full mesh, 203, 204

hierarchical, 190–197

benefits, 191–193

three-layer, 193–197, 194

load balancing, 205–206

partial mesh, 204, 204–205

topology table, 338

ToS (Type of Service), 587

totally stubby area, 588

for OSPF, 361, 374–375

traffic attacks, 484

traffic shaping, 419, 588

traffic stream, data segment sharing of, 22

transfer modes, HDLC support for, 232

translational bridging, source-route, 392

Transmission Control Protocol (TCP),125, 586

vs. UDP, 126

Transmission Control Protocol/Internet Protocol (TCP/IP), 120–131, 586

and DOD model, 122

exam essentials, 142–143

window sizes, 26

Transmission convergence (TC) sublayer, in ATM Physical layer, 45–46

transmit buffers, 419

transparent bridging, 384, 384–390, 588

filtering packets, 387–388

forwarding packets, 385–386

learning MAC addresses, 384–385

loop avoidance, 388–390

source-route, 391–392

Transport layer (OSI), 21–25, 26, 588

Trap message, 436, 437

Trap Message, 588

triggered updates, 321

TRIP (Token Ring Interface Processor), 588

trunk, 588

trunk links, 96–97, 97

Trunk Up-Down (TUD), 588–589

TTL (Time to live), 588

exceeding, 320

TUD (Trunk Up-Down), 588–589

tunneling, 589

Type field in data frame, 30

Type of Service (ToS), 587