Index F

F

Failure

analysis, 404

defined, 493

LAN, 425

mitigation approaches, 409–10

multiple points of, 393–94

network design and, 392

planning for, 393–416

recovery times, 408

scope, 402

single point of, 393, 403–5

terminology, 393–94

types of, 392

Fault management, 636

Fault resilience, 416–32

defined, 394

systems, 433

Fault tolerance

backbone design, 465

defined, 394

loading, 463

star topology, 419–20

topological, 417

Fault-tolerant systems

defined, 433

example application, 438–39

features, 436–37

HA clusters combined with, 455–56

implementation, 435

operating systems, 438

resiliency, 437

scalability, 435, 438

server architecture, 433

FDDI, 86

Federal Information Processing Standards (FIPS), 16

Feedback, design, 15

Fiber Distributed Data Interface (FDDI), 594

File Transfer Protocol (FTP), 34

back connections, 510

caching and, 526

load sharing, 509–10

load-sharing proxies, 454, 509

vulnerabilities, 309

Filter group, 659

Filtering techniques, 478–82

Filterspec, 602

Firewalls, 338–46

architectures, 339

concepts, 339

defined, 46, 338

limitations, 346

packet-filtering routers, 340–42

personal, 345

proxy servers/application gateways, 342–44

stateful, 344–45

types of, 339–40

VPN interaction with, 382–84

First come, first served (FCFS), 235

First in, first out (FIFO), 235

enhanced queuing, 494

queuing, 493

Floor design, 467–68

Flows, 553–55

classifiers, 556, 557

defined, 553–54

descriptors, 601–2

handling, 555–57

identification, 554–55

for IP switching, 557–59

IS, 601–2

sessions, 601

Flowspec, 601–2

Forwarding

algorithm, 169–71

broadcast, 65, 221

table, 171

Fragmentation, 537

Frame Relay, 596–97

admission control, 596

performance, 596

Frame size, 536

Full Qualified Domain Names (FQDNs), 110