1. LAN Cabling

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

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

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

5. UTP Cables

6. 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

7. 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

8. Shielded Twisted-Pair Cable

9. Coaxial cable
100 KHz
500 MHz

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

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

12. Attach the RJ-45

13. 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

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

15. 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

16. 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

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

18. Crossover Cable 1 2 3 4 5 6 7 8

19. Straight-Through Cable1 2 3 4 5 6 7 8
straight-through

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

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

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