Sabtu, 16 April 2011

Types of cables in STAR Topology

Almost all computer networks are now using LAN topology with STAR topology type. because the star topology has the ease of maintenance and repair networks in the event of problems on the network.
The star topology there are two types of cable that can be used. cable is basically used both use UTP or STP cable. but the division here is based on the number eight wire arrangement found on cable UTP / STP.
eight cables have eight different colors, there are:
  1. 1. white-orange
  2. 2. orange
  3. 3. white-green
  4. 4. green
  5. 5. white-blue
  6. 6. blue
  7. 7. White-brown
  8. 8. Brown
two types of cable that I mentioned above is the Cross-overs and Straight-over. to the concept of wiring as well there are two types, namely T568A and T568B.

T568A arrangement
  1. 1. white-orange
  2. 2. orange
  3. 3. white-green
  4. 4. blue
  5. 5. white-blue
  6. 6. green
  7. 7. White-brown
  8. 8. Brown

T568B arrangement:
  1. 1. white-green
  2. 2. green
  3. 3. white-orange
  4. 4. blue
  5. 5. white-blue
  6. 6. orange
  7. 7. White-brown
  8. 8. Brown


To make STRAIGHT-OVER cable, I recommend to use the T568A arrangement at both ends of the cable. CROSS-OVER while for cable, I recommend to use the Type T568A on one end of the cable. and one end of the cord longer use T568B arrangement.
although there are different opinions with me, but I used to use way of wiring above to build a network.
differences in the use of straight-over cable and CROSS-OVER cable is as below:

check the cable using a cable tester is as below:
insert both ends of the cable to the cable tester

if
Straight-over then indicator lights on the left and right will light up simultaneously with the position
1:1
2:2
3:3
4:4
5:5
6:6
7:7
8:8
And if the cross-over then indicator lights on the left and right will light up simultaneously with the position
1:3
2:6
3:1
4:4
5:5
6:2
7:7
8:8

Among the knowledge I have to say about the wiring on a computer network with star topology


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