TCP/IP Management Programming Manual

HP NonStop TCP/IP Management Programming Manual—529636-001
Glossary-1
Glossary
This glossary defines terms used both in this manual and in other NonStop TCP/IP
manuals. Both industry-standard terms and HP terms are included. Because this
glossary for NonStop TCP/IP as a whole, not all of the terms listed here appear in this
manual.
address mask. A bit mask used to select bits from an Internet address for subnet
addressing. The mask is 32 bits long and selects the network portion of the Internet
address and one or more bits from the local portion.
address resolution. Conversion of an Internet address into a corresponding physical
address. Depending on the underlying network, resolution may require broadcasting on
a local network. See also Address Resolution Protocol (ARP).
Address Resolution Protocol (ARP). The Internet protocol used to dynamically bind a
high-level Internet Address to a low-level physical hardware address. ARP applies only
across a single physical network and is limited to networks that support hardware
broadcast.
Advanced Projects Research Agency (ARPA). Former name of DARPA, the government
agency that funded the ARPANET and DARPA Internet.
ARP. See Address Resolution Protocol (ARP).
ARPA. See Advanced Projects Research Agency (ARPA).
ARPANET. A pioneering long-haul network funded by ARPA (later DARPA) and built by Bolt,
Baranek, and Newman (BBN). It served as the basis for early networking research as
well as a central backbone during the development of the Internet.
attribute. In DSM, a characteristic of an entity. For example, two attributes of a
communications line might be its baud rate and its retry count. In a token-oriented
interface based on SPI, an attribute of an object is usually expressed as either a simple
token or as a field within an extensible structured token. See also simple token or
extensible structured token.
autonomous system. A collection of gateways and networks that fall under one
administrative entity and cooperate closely to propagate network reachability (and
routing) information among themselves using an interior gateway protocol of their
choice. Gateways within an autonomous system have a high degree of trust. At least
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.