Digi PortServer II, Руководство пользователя

Страница: 265 / 277

90030500B Glossary Page 245
Glossary
10BaseT
IEEE 802.3 specification, using twisted pair wiring and
RJ-45 connectors.
10Base2 IEEE 802.3 specification network, using coaxial cables
and BNC connectors. Sometimes called “thin Ethernet” or
“Thinnet”.
Address
A data structure used to identify a unique entity, such as a
particular process or network.
ALTPIN
A software feature that makes the DCD signal available on
pin 1 of an eight pin RJ-45 connector, allowing use of eight
pin RJ-45 to DB-25 adapters.
Annex D Annex D of the ANSI T1.617 Frame Relay protocol speci-
fication.
ARP
Address Resolution Protocol. ARP maps hardware net-
work addresses to external IP addresses.
Asynchronous
transmission (async)
Operation of a network on which events are initiated by a
clock signal. In such instances, individual characters are
encapsulated in control bits called start and stop charac-
ters.
Baud Signaling speed equal to the number of signal events per
second. Baud is the same as bits per second if each signal
event represents exactly one bit.
Bc
Committed Burst rate. See Chapter 14, Configuring
Frame Relay.
BCN
Backward Congestion Notification. See Chapter 14, Con-
figuring Frame Relay.
BECN
Backward Explicit Congestion Notification. See Chapter
14, Configuring Frame Relay.
BootP
Bootstrap Protocol.
Broadcast packets
Packets that are sent to all devices on a network.
BPS
Bits per second. See also Baud.