Planet VDR-300NU User Manual page 131

User Manual of VDR-300NU
RFC
Request for Comments - Refers to documents published by the Internet Engineering Task Force (IETF)
proposing standard protocols and procedures for the Internet. RFC can be found at www.ietf.org.
Route
The path that network traffic takes from its source to its destination. The route a datagram may follow can
include many gateways and many physical networks.
In the Internet, each datagram is routed separately.
Router
A system is responsible for making decisions about which of several paths network (or Internet) traffic will
follow. To do this, it uses a routing protocol to gain information about the network and algorithms to
choose the best route based on several criteria known as "routing metrics".
Routing Table
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
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