ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 341)

Network parameters

address classes, 212–213

configuration, 211–216

configuration (Linux/BSD), 215–216

configuration (Windows XP), 215

DNS (domain name service), 214

IP addresses, 211–212

IPv4 addresses, 212

review, 211–214

subnet mask, 214

Neutral, 165

NOC (Network Operation Center), 284

O

OFDM (orthogonal frequency division

multiplexing)

frequency bands, 91

functional blocks, 94–95

interface frames, 91–100

multichannel modulation, 158

symbol details, 92–93

symbols, 88, 91–93

transmission schemes, 92

Ohm’s law, 19

Opera consortium, 9

Optimized architecture, 306–307

Overhead

maximal, 174

minimum, 173

P

Passive repeaters, 145

PCS (physical carrier sense), 52

Peer-to-peer mode, 34–36

advantages/disadvantages, 32

architecture, 34, 130

defined, 32

device parameters, 34–35

equipment, 128–129

parameter exchange in, 35

PLC network organization, 37

use of, 36

See also Network modes

Phase, 165

PHY data rate estimation, 180

Physical frames, 96–100

data body, 98, 99

elements, 96

end delimiter, 98–100

start delimiter, 98

Physical layer, 27

Physical layer frames, 88–90

Physical repeaters, 26–27

PLC

advantages/disadvantages, 10–12

for businesses, 247–271

for communities, 273–293

defined, 1

device priority, 180

functionalities, 31–60

in home, 217–245

hybrid, 295–308

InternetBox and, 119–121

modems, 130–140

in practice, 105–308

repeaters, 25–26

standardization, 10

technologies, 1–10

technologies in OSI model, 28

theory, 13–104

VoIP under, 262–263

PLC Forum, 10

PLC gateways

configuring, 224–228

data traffic priority levels, 227

elements determining, 224

for HomePlug device, 225

location of, 226

PLC networks

attacks, 78–80

authentication, 75

as backbones, 247

data rates, 171–178

development, 105

local, 115–119

network keys, 75–78

parameter configuration, 211–216

physical frames access, 75

physical medium access, 73–74

reliability, 72

security, 72–80, 178

security improvements, 80–85

simplicity, 72

status diagnostic function, 187

testing operation, 230–231

topology, choosing, 167–168

PLCP-PDU, 172

PLCP PPDU (physical level common protocol

PPDU), 96

PLC/Wi-Fi, 298–303

device configuration, 300

322 Index

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