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determine which if any multicast traffic needs to be forwarded to each
of its subnetworks.
Intranet An Intranet is an organization wide network using Internet protocols
such as web services, TCP/IP, HTTP and HTML. An Intranet is normally
used for internal communication and information, and is not accessible
to computers on the wider Internet.
IP Internet Protocol. IP is a layer 3 network protocol that is the standard
for sending data through a network. IP is part of the TCP/IP set of
protocols that describe the routing of packets to addressed devices.
IPX Internetwork Packet Exchange. IPX is a layer 3 and 4 network protocol
designed for networks that use Novell
®
Netware
®
.
IP address Internet Protocol address. A unique identifier for a device attached to a
network using TCP/IP. The address is written as four octets separated
with periods (full-stops), and is made up of a network section, an
optional subnet section and a host section.
Jitter An expression often used to describe the end-to-end delay variations
during the course of a transmission. See also latency.
LAN Local Area Network. A network of endstations (such as PCs, printers,
servers) and network devices (hubs and switches) that cover a relatively
small geographic area (usually not larger than a floor or building). LANs
are characterized by high transmission speeds over short distances (up
to 1000 m).
LLC Logical Link Control. A sublayer of the IEEE data link layer that is
located above the MAC sublayer. The LLC sublayer is responsible for
MAC sublayer addressing, flow control, error control, and framing.
latency The delay between the time a device receives a packet and the time the
packet is forwarded out of the destination port.
line speed See baud.
loop An event that occurs when two network devices are connected by
more than one path, thereby causing packets to repeatedly cycle
around the network and not reach their destination.
MAC Media Access Control. A protocol specified by the IEEE for determining
which devices have access to a network at any one time.
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