ETHERNET CABLES - RJ45/COLORS & CROSSOVER.

ETHERNET CABLES - RJ45/COLORS & CROSSOVER.

As we know for networking we mostly use Lan cbale with RJ45 Connectors .For networking we should have knowledge of ( what are the International & Standerad  coding  for lan ).If we don't know what are the standards for cabling we can't connect even network .This will also help in easily connecting IT Devices .

Ethernet cable color-coding exists as part of the industry standard - EIA/TIA T568A(Electronic Industries Alliance/Telecommunication Industries Association).

Standards exist so technicians can know how the cable should work and can reliably alter the cable when necessary.

 

A:- Ethernet Patch cable :- we can say this is Straight cable :- This type of cable are used to connect :-

• Connect a computer to a switch/hub's normal port.
• Connect a computer to a cable/DSL modem's LAN port.
• Connect a router's WAN port to a cable/DSL modem's LAN port.
• Connect a router's LAN port to a switch/hub's up-link port. (Normally used for expanding network)
• Connect two switches/hubs with one of the switch/hub using an up-link port and the other one using normal port.
• 

B:- Ethernet Crossover Cable :- For connecting same kind of devices .

• computer to uplink port
• Computer to computer .
• computer to print server
• uplink port to uplink port (hub/switch)
• normal port to normal port (hub/switch

  

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C:- Crossover wired cables (commonly called crossover cables) are very much like Straight-Through cables with the exception that TX and RX lines are crossed (they are at oposite positions on either end of the cable. Using the 568-B standard as an example below you will see that Pin 1 on connector A goes to Pin 3 on connector B. Pin 2 on connector A goes to Pin 6 on connector B ect. Crossover cables are most commonly used to connect two hosts directly. Examples would be connecting a computer directly to another computer, connecting a switch directly to another switch, or connecting a router to a router.Note: While in the past when connecting two host devices directly a crossover cable was required. Now days most devices have auto sensing technology that detects the cable and device and crosses pairs when needed.

Thank you .