This document discusses cabling for local area networks (LANs). It covers different types of cables used in LANs like unshielded twisted pair (UTP) and coaxial cables. UTP cables are categorized based on their bandwidth and use. The document explains how to identify the different wires in UTP cables and how to make straight-through, crossover, and roll-over cables based on the wire mapping. Proper cabling and avoiding untwisting of wires for too long are emphasized for ensuring good connectivity.

1. 1
LAN Cabling
CCNA Instructor Training Course
October 12-17, 2009
Department of Computer Engineering
Kasetsart University

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

3. 3
LAN Device Consideration
Cost
Manageability
Expandability
Speed
Ports

4. 5
Ethernet in the Campus
 10base-T
 Fast Ethernet
 End user
 Gigabit Ethernet
 Backbone

5. 6
Twisted Pair Cable
100 Hz 5 MHz
Outer Insulator
(PVC)
Solid Copper
Conductors

6. 7
UTP Cables

7. 8
UTP cable standard
Category Bandwidth Digital/Analog Use
1 very low Analog Telephone
2 < 2 MHz Analog/digital LANs
3 16 MHz Digital LANs
4 20 MHz Digital LANs
5 100 MHz Digital LANs
5e 100 MHz Digital LANs
6 250 MHz Digital LANs
6a 550 MHz Digital LANs
7 600 MHz Digital LANs

8. 9
UTP Cables and Ethernet
Types UTP Cable Type Duplex Max Distance
10Base-T Cat3/Cat5 Half/Ful
l
100 m
100Base-T4 Cat3 Half/Ful
l
100 m
100Base-TX Cat5 Full 100 m
1000Base-T Cat5e/Cat6 Full 100 m
1000Base-TX Cat6 Full 100 m
10GBase-T Cat6a/Cat7 Full 100 m

9. 10
Shielded Twisted-Pair Cable

10. 11
Coaxial cable
100 KHz 500 MHz

11. 12
Coaxial cable standard
Category Impedance Use
RG-59 75 W Cable TV
RG-58 50 W Thin Ethernet
RG-11 50 W Thick Ethernet

12. 13
Coaxial cable connector
 Barrel Connectors
 Bayonet network connector (BNC)
 T-connector
 Terminator

13. 14
Attach the RJ-45

14. 15
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
PC
Hub
1
2
3
4
56
7
8
9
1
0
1
1
1
2
A
B
1
2
x
6
x
8
x
2
x
9
x
3
x
1
0
x
4
x
1
1
x
5
x
7
x
1
x
Ethernet
A
1
2
x
6
x
8
x
2
x
9
x
3
x
1
0
x
4
x
1
1
x
5
x
7
x
1
x
C

15. 16
Ethernet Crossover 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
PC PC

16. 17
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

17. 18
RJ-45 Color Code
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

18. 19
Straight-Thru Cable
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
EIA/TIA 568 A EIA/TIA 568 B

19. 20
Crossover Cable
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

20. 21
Straight-Through Cable
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
straight-through

21. 22
Cross-Over Cable
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
cross-over

22. 23
Good vs. Bad Cabling
Good Bad
Wires are untwisted too long

23. 24
Roll-Over Cable
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
roll-over