What type of RJ45 UTP cable do you use to connect a PC's COM port to a...
To connect to a router or switch console port, you would use an RJ45 UTP rolled cable.
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What type of RJ45 UTP cable do you use to connect a PC's COM port to a...
Understanding the Connection Type
To connect a PC's COM port to a router or switch console port, the appropriate cable type is essential for successful communication.
Types of Cables
- Straight-through Cable:
- Used to connect similar devices (PC to PC, switch to switch).
- Crossover Cable:
- Utilized for connecting different devices (PC to router, router to switch).
- Crossover with a CSU/DSU:
- Typically used for connecting a router to a digital line service.
- Rolled Cable:
- This is the correct choice for connecting a PC's COM port to a router or switch console port.
Why Rolled Cable?
- Pin Configuration:
- A rolled cable, also known as a rollover cable, has a unique pin configuration where the pins are reversed at each end.
- This means that pin 1 on one end connects to pin 8 on the other, pin 2 to pin 7, and so forth.
- Console Connections:
- Routers and switches typically have console ports that require this specific wiring to facilitate proper communication between the device and the PC.
- Standard Usage:
- Rolled cables are the standard for management and configuration tasks, allowing the user to access device settings directly via terminal emulation software.
Conclusion
When connecting a PC's COM port to a router or switch console port, a rolled cable is essential due to its unique wiring configuration, ensuring correct communication between the devices.