Index_D

D

data channels, Bluetooth, 128

data frames, 802.11, 249-251

data messages, 802.11, 235

Datagram service, WAP, 314

DCF (Distributed Coordination Function), 802.11, 262

deauthentication, 802.11, 231, 239

decoders, WAP, 308

delay, QoS, 85

designing nomadic and hotspot networks, 328

DHCP, 361, 363

BOOTP message format, 370

Client identifier option, 366

client network address allocation, 393-394

client parameters, 379

clients, 391

configuration parameters repository, 368-369

design goals, 364

DHCP messages, 384-390

dynamic network address allocation, 369

externally assigned network addresses, 395-396

externally configured network addresses, 378

IP address allocation, 363

known network address allocation, 395

message formats, 364-365

multiple interface clients, 380

network address allocation, 370-374

network address reuse, 374-376

options field, 368

sending messages, 380-382

server administrative controls, 383

servers, 384

siaddr field, 367

time values, 378

logical design considerations, 329

NAPT, 354-355

NAT, 348-351

addresses, 351-352, 356-359

basic operation, 353

checksum adjustment, 358

DNS support, 359

FTP support, 358

ICMP error packet modification, 358

IP option handling, 359

packet translation, 357

private address spaces, 360

routing, 360

switch-over to NAPT, 360

traditional approach, 352

physical design considerations, 330-331

devices, WAP, 301, 312

DHCP (Dynamic Host Configuration Protocol)

client network address allocation, 393-394

externally assigned network addresses, 395

hotspot network design, 361-363

BOOTP message format, 370

Client identifier option, 366

client parameters, 379

clients, 391

configuration parameters repository, 368-369

design goals, 364

dynamic network address allocation, 369

externally configured network addresses, 378

IP address allocation, 363

messages, 364-365, 384-390

multiple interface clients, 380

network address allocation, 370-374

network address reuse, 374-376

options field, 368

sending messages, 380-382

server administrative controls, 383

servers, 384

siaddr field, 367

time values, 378

known network address allocation, 395

DHSS, 111

diffserv, 86-91

DIFS (DCF interframe space), 114

dipoles, antennas, 148

directional antennas, 147-149

disassociation messages, 802.11, 237

domains, diffserv, 91

Doze mode, WLAN stations, 109

DPSK (differential phase-shift keying), DSSS, 111

DS (distribution system), 802.11, 220

association, 228

disassociation, 229

integration function, 227

message distribution, 227

reassociation, 229

support services, 228

DSCPs (diffserv code points), diffserv, 91

DSS (Distribution System Service), 802.11, 224

DSSS (Direct Sequence Spread Spectrum), 59

DPSK, 111

PHY specification, 264-265

PLME, 265

WLANs, 104

XOR function, 111

dynamic allocation, DHCP, 363