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Information stored within a router that contains network path and status information.
It is used to select the most appropriate route to forward information along.
Routing Information Protocol
Routers periodically exchange information with one another so that they can
determine minimum distance paths between sources and destinations.
SNMP
Simple Network Management Protocol - The network management protocol of choice
for TCP/IP-based Internet.
SOCKET
(1) The Berkeley UNIX mechanism for creating a virtual connection between
processes.
(2) IBM term for software interfaces that allow two UNIX application programs to
talk via TCP/IP protocols.
Spanning-Tree Bridge Protocol (STP)
Spanning-Tree Bridge Protocol (STP) - Part of an IEEE standard. A mechanism for
detecting and preventing loops from occurring in a multi-bridged environment.
When three or more LAN'
s segments are connected via bridges, a loop can occur.
Because of a bridge forwards all packets that are not recognized as being local,
some packets can circulate for long periods of time, eventually degrading system
performance. This algorithm ensures only one path connects any pair of stations,
selecting one bridge as the '
root'
bridge, with the highest priority one as identifier,
from which all paths should radiate.
Spoofing
A method of fooling network end stations into believing that keep alive signals have
come from and returned to the host. Polls are received and returned locally at
either end
Static IP Address
A static IP address is an IP address permanently assigned to computer in a TCP/IP
network. Static IP addresses are usually assigned to networked devices that are
consistently accessed by multiple users, such as Server PCs, or printers. If you are
using your Router to share your cable or DSL Internet connection, contact your ISP to
see if they have assigned your home a static IP address. You will need that address
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during your Router'
s configuration.
Subnet
For routing purposes, IP networks can be divided into logical subnets by using a
subnet mask. Values below those of the mask are valid addresses on the subnet.
TCP
Transmission Control Protocol - The major transport protocol in the Internet suite of
protocols provides reliable, connection-oriented full-duplex streams.
TFTP
Trivial File Transfer Protocol. A simple file transfer protocol (a simplified version of
FTP) that is often boot diskless workstations and other network devices such as
routers over a network (typically a LAN).
Telnet
The virtual terminal protocol in the Internet suite of protocols - Allows users of one
host to log into a remote host and act as normal terminal users of that host.
Transparent bridging
The intelligence necessary to make relaying decisions exists in the bridge itself and is
thus transparent to the communicating workstations. It involves frame forwarding,
learning workstation addresses, and ensuring no topology loops exist (in conjunction
with the Spanning-Tree algorithm).
UDP
User Datagram Protocol - A connectionless transport protocol that runs on top of
TCP/IP'
s IP. UDP, like TCP, uses IP for delivery; however, unlike TCP, UDP
provides for exchange of datagram without acknowledgments or guaranteed delivery.
Best suited for small, independent requests, such as requesting a MIB value from an
SNMP agent, in which first setting up a connection would take more time than
sending the data.
UNI signaling
User Network Interface signaling for ATM communications.
Virtual Connection (VC)
A link that seems and behaves like a dedicated point-to-point line or a system that
delivers packets in sequence, as happens on an actual point-to-point network. In
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reality, the data is delivered across a network via the most appropriate route. The
sending and receiving devices do not have to be aware of the options and the route is
chosen only when a message is sent. There is no pre-arrangement, so each virtual
connection exists only for the duration of that one transmission.
WAN
Wide area network - A data communications network that spans any distance and is
usually provided by a public carrier (such as a telephone company or service
provider).

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