LAN Cabling

Objectives Cabling the LANs Straight-through Cross-over Roll-over

Ethernet in the Campus 10base-T Fast Ethernet Gigabit Ethernet End user Gigabit Ethernet Backbone

Twisted Pair Cable 100 Hz 5 MHz Outer Insulator Solid Copper (PVC) Conductors

UTP Cables

UTP cable standard Category Bandwidth Digital/Analog Use 1 very low Telephone 2 < 2 MHz Analog/digital LANs 3 16 MHz Digital 4 20 MHz 5 100 MHz 5e 6 250 MHz 6a 550 MHz 7 600 MHz

UTP Cables and Ethernet Types UTP Cable Type Duplex Max Distance 10Base-T Cat3/Cat5 Half/Full 100 m 100Base-T4 Cat3 100Base-TX Cat5 Full 1000Base-T Cat5e/Cat6 1000Base-TX Cat6 10GBase-T Cat6a/Cat7

Shielded Twisted-Pair Cable

Coaxial cable 100 KHz 500 MHz

Coaxial cable standard Category Impedance Use RG-59 75 W Cable TV RG-58 50 W Thin Ethernet RG-11 Thick Ethernet

Coaxial cable connector Barrel Connectors Bayonet network connector (BNC) T-connector Terminator

Attach the RJ-45

Ethernet Straight-Thru Cable TD + TD - RD + RD - 1 2 3 4 5 6 7 8 PIN # RJ-45 Connector 1 2 3 4 5 6 7 8 TD + TD - RD + RD - PIN # RJ-45 Connector 1 2 3 4 5 6 7 8 9 A B x E t h e r n C Hub PC

Ethernet Crossover Cable TD + TD - RD + RD - 1 2 3 4 5 6 7 8 PIN # RJ-45 Connector PC

Ethernet Media and Connector “Electronic Industries Association and the Telecommunications Industry Association” (EIA/TIA) standards EIA/TIA-568 (SP-2840) Commercial Building Telecommunications Wiring Standards

RJ-45 Color Code EIA/TIA 568 A EIA/TIA 568 B 1. White/Green 2. Green 3. White/Orange 4. Blue 5. White/Blue 6. Orange 7. White/Brown 8. Brown 1. White/Orange 2. Orange 3. White/Green 4. Blue 5. White/Blue 6. Green 7. White/Brown 8. Brown EIA/TIA 568 A EIA/TIA 568 B

Straight-Thru Cable EIA/TIA 568 A EIA/TIA 568 B 1 2 3 4 5 6 7 8 1 2 3

Crossover Cable 1 2 3 4 5 6 7 8

Straight-Through Cable 1 2 3 4 5 6 7 8 straight-through

Cross-Over Cable 1 2 3 4 5 6 7 8 cross-over

Good vs. Bad Cabling Good Bad Wires are untwisted too long

Roll-Over Cable 1 2 3 4 5 6 7 8 roll-over