Software
Crestron
e-Control
®
Port
- A pathway into and out of the computer or a network device such as a switch or
router. For example, the serial and parallel ports on a personal computer are external
sockets for plugging in communications lines, modems, and printers.
Port Mirroring
- Port mirroring, also known as a roving analysis port, is a method of
monitoring network traffic that forwards a copy of each incoming and outgoing packet
from one port of a network switch to another port where the packet can be studied. A
network administrator uses port mirroring as a diagnostic tool or debugging feature,
especially when fending off an attack. It enables the administrator to keep close track of
switch performance and alter it if necessary. Port mirroring can be managed locally or
remotely.
PPPoE
(
P
oint to
P
oint
P
rotocol
o
ver
E
thernet) - A method used mostly by DSL
providers for connecting personal computers to a broadband modem for Internet access.
It is similar to how a dial-up connection works but at higher speeds and quicker access.
PPTP
(
P
oint-to-
P
oint
T
unneling
P
rotocol) - A protocol (set of communication rules)
that allows corporations to extend their own corporate network through private
“tunnels” over the public Internet. Effectively, a corporation uses a wide-area network
as a single large local area network. A company no longer needs to lease its own lines
for wide-area communication but can securely use the public networks. This kind of
interconnection is known as a virtual private network (VPN).
PrintServer
- A hardware device that enables a printer to be located anywhere in the
network.
RIP
(
R
outing
I
nformation
P
rotocol)
-
A simple routing protocol that is part of the
TCP/IP protocol suite. It determines a route based on the smallest hop count between
source and destination. RIP is a distance vector protocol that routinely broadcasts
routing information to its neighboring routers. It is known to waste bandwidth.
AppleTalk, DECnet, TCP/IP, NetWare, and VINES all use incompatible versions of
RIP.
RJ-11
(
R
egistered
J
ack-
11
) - A telephone connector that holds up to six wires. The RJ-
11 is the common connector used to plug a telephone into a wall. (The 6-position cable
is also known by some as a RJ-12.)
RJ-45
- A connector similar to a telephone connector that holds up to eight wires, used
for connecting Ethernet devices.
Router
- Protocol-dependent device that connects sub networks together. Routers are
useful in breaking down a very large network into smaller sub networks; they introduce
longer delays and typically have much lower throughput rates than bridges.
SOHO
(
S
mall
O
ffice/
H
ome
O
ffice) - Market segment of professionals who work at
home or in small offices.
Static IP Address
- A permanent IP address that is assigned to a node in a TCP/IP
network.
Static Routing
- Forwarding data in a network via a fixed path. Static routing cannot
adjust to changing line conditions as can dynamic routing.
Storage
- The semi-permanent or permanent holding place for digital data.
STP
(
S
hielded
T
wisted
P
air) - Telephone wire that is wrapped in a metal sheath to
eliminate external interference.
52
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Crestron e-Control®
Reference Guide – DOC. 6052
