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Building a Simple Network

Connecting to an Ethernet LAN

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Network Interface Card

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Comparing Ethernet Media Requirements

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Differentiating Between Connections

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1000BASE-T GBIC

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Cisco Fiber-Optic GBICs

Short wavelength (1000BASE-SX) Long wavelength/long haul (1000BASE-LX/LH) Extended distance (1000BASE-ZX)

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Unshielded Twisted-Pair Cable

Speed and throughput: 10 to 1000 Mb/s Average cost per node: Least expensive Media and connector size: Small Maximum cable length: Varies

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RJ-45 Connector

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RJ-45 Jack

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Cable 10BASE-T/100BASE-TX Straight-Through

Pin Label Pin Label

12345678

TX+TX-RX+NCNCRX-NCNC

12345678

TX+TX-RX+NCNCRX-NCNC

Straight-Through Cable

Wires on cable endsare in same order.

UTP Implementation (Straight-Through)

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Cable 10BASE-T or100BASE-TX Straight-Through Crossover Cable

Some wires on cableends are crossed.

Pin Label Pin Label

12345678

TX+TX-RX+NCNCRX-NCNC

12345678

TX+TX-RX+NCNCRX-NCNC

EIA/TIA T568A EIA/TIA T568B

UTP Implementation (Crossover)

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UTP Implementation: Straight-Through vs. Crossover

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Using Varieties of UTP

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Summary

Also called a LAN adapter, the NIC plugs into a motherboard and provides a port for connecting to the network. The MAC address is burned onto each NIC by the manufacturer,

providing a unique, physical network address that permits the device to participate in the network. The cable and connector specifications used to support Ethernet

implementations are derived from the EIA/TIA standards body. The categories of cabling defined for the Ethernet are derived

from the EIA/TIA-568 (SP-2840) Commercial Building Telecommunications Wiring Standards.

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Summary (Cont.)

UTP cable is a four-pair wire. Each of the eight individual copper wires in UTP cable is covered by an insulating material, and thewires in each pair are twisted around each other. A crossover cable is used to connect between similar devices

(such as switch to switch, router to router, PC to PC, and hub to hub). A straight-through cable is used to connect between dissimilar

devices (such as switch to router, switch to PC, hub to router, and hub to PC).

Building a Simple NetworkNetwork Interface CardComparing Ethernet Media RequirementsDifferentiating Between Connections1000BASE-T GBICCisco Fiber-Optic GBICsUnshielded Twisted-Pair CableRJ-45 ConnectorRJ-45 JackUTP Implementation (Straight-Through)UTP Implementation (Crossover)UTP Implementation: Straight-Through vs. CrossoverUsing Varieties of UTPSummarySummary (Cont.)