Specifications

5
Cisco 600 Series Installation and Operation Guide
78-11190-01
Glossary
Internet
A collection of networks interconnected by a set of routers which allow them to
function as a single, large virtual network. When written in upper case, Internet
refers specifically to the DARPA (Defense Advanced Research Projects Agency)
Internet and the TCP/IP protocols it uses.
Internet Protocol
(IP)
The network layer protocol for the Internet protocol suite.
IP
See Internet Protocol.
IP address
The 32-bit address assigned to hosts that want to participate in a TCP/IP Internet.
IP datagram
The fundamental unit of information passed across the Internet. It contains source
and destination addresses along with data and a number of fields that define such
things as the length of the datagram, the header checksum, and flags to say
whether the datagram can be or has been fragmented.
ISO
International Standards Organization. A voluntary, non-treaty organization
founded in 1946, responsible for creating international standards in many areas,
including computers and communications.
ISP
Internet service provider. A company that allows home and corporate users to
connect to the Internet.
ITU-T
International Telecommunications Union, Standardization Sector. ITU-T is the
telecommunication standardization sector of ITU and is responsible for making
technical recommendations about telephone and data (including fax)
communications systems for service providers and suppliers.
L
LAN
Local area network. A limited distance (typically under a few kilometers or a
couple of miles) high-speed network (typically 4 to 100 Mbps) that supports
many computers.
LED
Light emitting diode. The lights indicating status or activity on electronic
equipment.
I