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This chapter first provides defines and discusses several TCP/IP concepts, including
subnetting and subnet masks, internet routing and gateways, and Class A, B, and C,
Internet addresses.
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Ethernet is a linear local area network developed by Xerox in 1976. Presently an
industry standard, Ethernet operates on a bus topology and uses CSMA/CD (Car rier
Sense Multiple Access with Collision Detection) to regulate traffic. Each device, or
node, is connected by either thin or thick coaxial cable or twisted-pair wiring. Based on
the IEEE 802.3 standard, Ethernet operates at 10 megabits (10 million bits ) or 100
megabits (100 million bits) per second.
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An Ethernet address is a unique address assigned to ea ch device on an Ethernet net-
work. If necessary, use the Eth. HW Address configuration menu to set your printer’s
Ethernet address.
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A computer or other device that attaches to two or more dissimilar networks and
passes data from one to another is known as a gateway. Data is routed from gateway
to gateway until it can be delivered to its final destination directly across one physical
network. Each gateway has two addresses—one for each network that it connects.
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The Internet is one or more networks connected by intelligent nodes, each of which is
referred to as an Internet routers (IR).