Motorola SVG2500 User Manual page 139

This document is uncontrolled pending incorporation in PDM
17 GLOSSARY
TERM
PING
PMD
point-to-point
POTS
port
port mirroring
port triggering
PPP
PPTP
private IP
protocol
provisioning
DEFINITION
A network utility that tests host reachability by sending a small
packet to the host and waiting for a reply. If you PING a
computer IP address and receive a reply, you know the computer
is reachable over the network. It also stands for
"Packet InterNet Groper. "
The physical media-dependent sublayer of the physical layer
which transmits bits or groups of bits over particular types of
transmission links between open systems. It entails the
electrical, mechanical, and handshaking procedures.
Physical connection made from one point to another.
The "plain old telephone service" offered through the PSTN;
basic analog telephone service. POTS uses the lowest 4 kHz of
bandwidth on twisted pair wiring.
On a computer or other electronic device, a port is a socket or
plug used to physically connect it to the network or to other
devices. In TCP/IP , a port is a number from 0 to 65536 used
logically by a client program to specify a server program. Ports 0
to 1024 are reserved
A feature that enables one port (source) on the SVG2500 to be
copied to another port (destination) to be studied. The destination
mirrors the transmitted (from) or received (to) data on the source
port to enable the person managing the network to monitor
activity.
A mechanism that allows incoming communication with
specified applications. Primarily used for gaming applications.
Point-to-Point Protocol is used to transport other protocols,
typically for simple links over serial lines. It is most commonly
used to access the Internet with a dial-up modem.
Point-to-Point Tunneling Protocol encapsulates other protocols. It
is a new technology to create VPNs developed jointly by several
vendors.
An IP address assigned to a computer on the SVG2500 LAN by
the DHCP server on the SVG2500 for an address specified lease
time. Private IP addresses are used by the SVG2500 LAN only;
they are invisible to devices on the Internet. See also public IP
address.
A formal set of rules and conventions for exchanging data.
Different computer types (for example PC, UNIX, or mainframe)
can communicate if they support common protocols.
The process of auto discovery or manually configuring a cable
modem on the CMTS.
153