ICND110S01L08

Network Interface Card

Differentiating Between Connections

1000BASE-T GBIC

▪Short wavelength (1000BASE-SX)

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

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

RJ-45 Connector

RJ-45 Jack

Cable 10BASE-T/

100BASE-TX Straight-Through

Pin Label Pin Label

1

2

3

4

5

6

7

8

TX+

TX-

RX+

NC

NC

RX-

NC

NC

1

2

3

4

5

6

7

8

TX+

TX-

RX+

NC

NC

RX-

NC

NC

Straight-Through Cable

Wires on cable ends

are in same order. UTP Implementation (Straight-Through)

Cable 10BASE-T or

100BASE-TX Straight-Through

Crossover Cable Some wires on cable ends are crossed.Pin Label Pin Label

12345678TX+TX-RX+NC NC RX-NC NC 12345678TX+

TX-

RX+

NC

NC

RX-

NC

NC

EIA/TIA T568A EIA/TIA T568B UTP Implementation (Crossover)

Using Varieties of UTP

▪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.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 the wires 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).