User Manual

P380 Users guide
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Internet A collection of networks interconnected by a set of routers, which allow them to
function as a single, large virtual network.
Internet (note the capital “I”) The largest internet in the world consisting of large
national backbone networks (such as MILNET, NSFNET, and CREN) and a myriad of
regional and local campus networks all over the world. The Internet is a multiprotocol
network, but generally carries TCP/IP.
Internet address See IP address.
Internet Protocol See IP.
ISP Internet service provider. A company that provides Internet - related services. Most
importantly, an ISP provides Internet access services and products to other companies
and consumers.
IP Internet Protocol. The network layer protocol for the TCP/IP protocol suite. It is a
connectionless, best-effort packet switching protocol.
IP address A 32-bit address assigned to hosts using TCP/IP. The address specifies a
specific connection to a network, not the host itself. See dotted decimal notation.
L
LAN Local Area Network. Any physical network technology (such as Ethernet) that
operates at high speed (typically 10 Mbit per second or more) over short distances (up to
a few kilometers). See WAN.
LED Light Emitting Diode. A luminous indicator.
M
MAC address. The hardware address of a device connected to a shared media. For
example, the MAC address of a PC on an Ethernet is its Ethernet address.
Metric A concept used to describe the cost of a route across a network, the distance to
the destination at the remote end of the route, or the capacity of the route.
N
Name resolution The process of mapping a name into the corresponding address. See
DNS.
NAT Network Address Translation, an Internet standard that enables a local-area network
(LAN) to use one set of IP addresses for internal traffic and a second set of addresses for
external traffic. A NAT box located where the LAN meets the Internet makes all