90030500B Glossary Page 247
Frame
The smallest unit of data on a network. Each frame con-
tains source and destination addresses, length field, data,
and checksum elements.
Frame Relay
A network interface standard derived from narrowband
ISDN technology, in which
frame
s of data are relayed on a
public frame relay service. See
ANSI Standard T1.606
or
ITU-T (CCITT) Standard I.233
for more information.
FT P
File Transfer Protocol. An IP application protocol for
transferring files between network devices.
ICMP
Internet Control Message Protocol. A subset of the Inter-
net Protocol (IP) that handles error monitoring and testing.
Intranet
A network that is based on the Internet architecture, but is
restricted to a single site or company.
IP
Internet Protocol. See
RFC791
for more information.
LAN
Local Area Network. A network covering a relatively
small geographic area, usually not larger than a small
building. LANs usually provide a relatively high data rate
and low error rates.
LCP
Link Control Protocol. Used on PPP connections for test-
ing and configuring the link.
Link
A network communications channel consisting of a circuit
or transmission path, including all equipment, between a
sender and receiver.
LMI
Local Management Interface. A protocol for managing
Frame Relay connections, for example,
ANSI T1.617
Annex D
or
ITU (CCITT) Q.933 Annex A
.
MIB
Management Information Base. The database of parame-
ters that an SNMP server can read from an SNMP-compat-
ible device such as PortServer II. See
RFC1213
for more
information.
Modem
Modulator-demodulator. A device that converts digital
signals for transmission over analog telephone lines, and
vice versa.
NIS
Network Information Services.
Packet
A logical grouping of data in a transmission that normally
includes a header and user data.
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