TCP/IP (Parallel Library) Configuration and Management Manual

Glossary
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
Glossary-2
baseband
one gateway in an autonomous system must advertise networks in that system to a
core gateway using EGP.
baseband. Characteristic of any network technology (like Ethernet) that uses a single
carrier frequency and requires all stations attached to the network to participate in
every transmission. See broadband.
bridge. A router that connects two or more networks and forwards packets among them.
Usually, bridges operate at the physical network level. For example, an Ethernet bridge
connects two physical Ethernet cables and forwards from one cable to the other
exactly those packets that are not local. Bridges differ from repeaters; bridges store
and forward complete packets, while repeaters forward electrical signals.
broadband. Characteristic of any network technology that multiplexes multiple, independent
network carriers onto a single cable (usually using frequency division multiplexing). For
example, a single 100 mbps broadband cable can be divided into ten 10 mbps carriers,
with each treated as an independent Ethernet. The advantage of broadband is less
cable; the disadvantage is higher cost for equipment. See baseband.
broadcast. A packet delivery system that delivers a copy of a given packet to all hosts that
attach to it is said to broadcast the packet. Broadcast may be implemented with
hardware or software.
brother. See failover brother.
BSD. Berkeley Software Distribution.
Carrier Sense Multiple Access (CSMA). A characteristic of network hardware that
operates by allowing multiple stations to contend for access to a transmission medium
by listening to see if it is idle.
Carrier Sense Multiple Access with Collision Detection (CSMA/CD). A characteristic of
network hardware that uses CSMA access combined with a mechanism that allows the
hardware to detect when two stations simultaneously attempt transmission. Ethernet is
an example of a well-known network based on CSMA/CD technology.
Class A. The network number is 1 through 127 (1 octet); that is, the first octet is in the
range 1-127. The remaining three octets in the address are used for the subnet
number and host number.
Class B. The network number is 128 through 191.255 (2 octets); that is, the first octet is in
the range 128-191, the second octet is in the range 0-255. The remaining two octets
are used for the subnet number and host number.
Class C. The network number is 192.0.0 through 255.255.255 (3 octets); that is, the first
octet is in the range 192-255, the second octet is in the range 0-255, and the third
octet is in the range 0-255. The remaining octet is used for the subnet number and
host number. The subnet number varies in length. The subnet number's width is
typically represented by a bit mask. The rest of the available bits uniquely identify the