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Cabling Pinouts (Ethernet UTP)

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Last updated 4 years ago

  • For .

    Pinouts for 10BASE-T and 100BASE-T:

  • 10BASE-T & 100BASE-T both use 2 pairs of 4 Wires:

  • To connect two different devices a Straight-through Cable is used but to connect two similar devices Crossover Cable is used.

    PC, ROUTERS & WAP's Ethernet Interface Transmits on Pin 1&2 and Receives at Pin 3&6

    whereas

    HUB & SWITCH Transmits at Pin 3&6 and Receives on Pin 1&2.

  • But if 2 PCs are connected then also they both will transmit at Pin 1&2 and receive at Pin 3&6. Hence a Straight-through cable won't work.

  • To connect two Similar devices we need a Straight Cable. But to connect two different devices we need a Crossover Cable.

  • Crossover cable will now be able to connect two PC by connecting PC 1's Pin 1-PC2's Pin 3 and lastly PC1's Pin 2-PC2's Pin 6.

  • Similarly to connect two Switch by connecting SW1's Pin3-SW2's Pin1 and lastly SW1's Pin6-SW2's Pin2.

    Pinouts for 1000BASE-T:

  • 1000BASE-T both uses all the 4 pairs of 8 Wires:

  • In 1000BASE-T CROSSOVER CABLE Pins 1,2,4&5 Transmits (TX) & Pins 3,6,7&8 Receives (RX)

Reference:

CCNA 200-301 OCG, Volume 1, Pg. 42,43,44,45,46 - Wendell Odom.

Transmitting Data on UTP