
GLOSSARY
Norand
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Management Information Bases Reference Manual Glossary-7
Subnetwork
A group of OSIĆend and intermediate systems under control of a single
administrative domain and using a common network access protocol.
TCP (Transmission Control Protocol)
An Internet standard transport protocol in the Internet protocols suite for
reliable, connectionĆoriented, fullĆduplex streams. Contrasts with UDP.
TCP/IP (Transmission Control Protocol, Internet Protocol)
Most networks combine IP with a higherĆlevel protocol called Transport Control
Protocol (TCP), which establishes a virtual connection between a destination an
a source.
IP by itself is something like a postal system. It allows you to address a package
and drop it in the system, but there is no direct link between you and the
recipient. TCP/IP establishes a connection between two hosts so they can send
messages back and forth for a period of time.
Telnet
The virtual terminal protocol in the Internet suite of protocols. Users on one
host can access another host and work as users of that host.
Token Ring
A network access method and topology where a token is sequentially passed from
station to station. Stations wishing to send data must wait for the token before
transmitting data. In a token ring, the next logical station is the next physical
station on the ring.
Transmission
The electrical transfer of a signal, message, or other form of data from one
location to another.
Trap
A basic SNMP operation that sends unsolicited SNMP agent messages, about
extraordinary events that occurred, for the SNMP management station.
UDP (User Datagram Protocol)
An Internet standard transport protocol that exchanges datagrams without
acknowledgements or guaranteed delivery.
WAN (Wide Area Network)
A network that covers a large geographic area. It is often used to connect two or
more LANs together. This usually involves a variety of methods to maintain
communications between all nodes in the network. For example, microwave
communications, fiberĆoptic connections or leased telephone lines.
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