Outdoor Router P-380
Users Guide
Gemtek Systems
Page 65
service
A term used with the router to refer to
a connection to another port on (another)
router, used to access dialup modems, hosts
that do not support TCP/IP and other
asynchronous devices.
SNMP
Simple Network Management Protocol.
The Internet standard protocol developed to
manage nodes on an IP network. See MIB.
subnet
A portion of a network, which may be a
physically independent network segment,
which shares a network address with other
portions of the network and is distinguished by
a subnet number. A subnet is to a network
what a network is to an internet.
subnet address
The subnet portion of an IP
address. In a subnetted network, the host
portion of an IP address is split into a subnet
portion and a host portion using an address or
subnet mask. See subnet mask, IP address
and network address.
subnet mask
A bit mask used to select bits
from an Internet address for subnet
addressing. The mask is 32 bits long and
selects the network portion of the Internet
address and one or more bits of the local
portion. Sometimes called address mask.
T
TCP
Transmission Control Protocol. The
TCP/IP standard transport layer protocol in the
Internet suite of protocols, providing reliable,
connection-oriented, full-duplex streams. It
uses IP for delivery.
TCP/IP
Protocol Suite Transmission Control
Protocol over Internet Protocol. This is
common shorthand, which refers to the suite of
transport and application protocols that runs
over IP. See IP, ICMP, TCP, UDP, FTP,
Telnet, and SNMP.
Telnet
The virtual terminal protocol in the
TCP/IP suite of protocols, which allows users
of one host t o log into a remote host and
interact as normal terminal users of that host.
topology
A network topology shows the
computers and the links between them. A
network layer must know the current network
topology to be able to route packets to their
final destination.
U
UDP
User Datagram Protocol. A transport
layer protocol in the TCP/IP suite of protocols.
UDP, like TCP, uses IP for delivery; however,
unlike TCP, UDP provides for exchange of
datagrams without acknowledgements or
guaranteed delivery.
URL
Uniform Resource Locator. A standard
format for specifying the name, type and
location of documents and resources on an
Internet. The syntax is
type://host.domain[:port]/path/filename, where
type specifies the type of document or
resource (e.g. http is a file on a WWW server;
file is a file on an anonymous FTP server;
telnet is a connection to a Telnet-based
service). See WWW.
W
WAN
Wide Area Network. Any physical
network technology that spans large
geographic distances. WANs usually operate a
slower speeds than LANs. See LAN.
WWW
World Wide Web. A hypertext-based,
distributed information system based on client
- server architecture. Web browsers (client
applications) request documents from Web
servers. Documents may contain text, graphics
and audiovisual data, as well as links to other
documents and services. Web servers and
documents are identified by URLs (Uniform
Resource Locators). See URL.
