# Problem You're working in a data center and need to connect two switches with a crossover cable. You don't have any on hand, so you have to create one by rewiring an Ethernet cable to the EIA/TIA 568 A/B terminator standards and adding new RJ-45 connectors to each end. Reorder the wires by moving them into the EIA/TIA 568 arrangement specified so that communication through the crossover cable can occur. ![[Mixed Up Ethernet Connector Diagram.png]] # Process The EIA/TIA 568-A and EIA/TIA 568-B are two distinct wiring standards which specify how the wires in an Ethernet cable are arranged inside an RJ-45 connector (also called an 8P8C modular). These are how the wires are arranged in an RJ-45 connector according to the EIA/TIA 568-A wiring standard: 1. White/green. 2. Green. 3. White/orange. 4. Blue. 5. White/blue. 6. Orange. 7. White/brown. 8. Brown. These are how the wires are arranged in an RJ-45 connector according to the EIA/TIA 568-B wiring standard: 1. White/orange. 2. Orange. 3. White/green. 4. Blue. 5. White/blue. 6. Green. 7. White/brown. 8. Brown. If an Ethernet cable has the same wiring standard on both ends, like both EIA/TIA 568-A or both EIA/TIA 568-B, that's referred to as a straight-through cable. That's because all of the pins in one port would directly connect to the same pins in the other port (pin 1 to pin 1, pin 2 to pin 2, etc). Similarly, if an Ethernet cable has the opposite wiring standard on either end, like EIA/TIA 568-A on one end and EIA/TIA 568-B on the other, that's referred to as a crossover cable. That's because the pins responsible for transmitting data in one port would directly connect to the pins responsible for receiving data in the other port, and vice versa. To make a crossover cable from a regular Ethernet cable, you just have to use the EIA/TIA 568-A wiring standard in one end and the EIA/TIA 568-B wiring standard in the other. # Answer ![[Crossover Ethernet Connector Diagram.png]]