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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
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