Which pins are used by a router in a FastEthernet connection to receive data?

In a FastEthernet connection using an RJ-45 connector, the pins used for receiving data are pins 3 and 6. When a router is connected to a switch or another device using a FastEthernet interface, it listens for incoming data traffic on these pins.

FastEthernet operates at 100 Mbps, utilizing a twisted-pair cable configuration. The assignment of specific pins for data transmission and reception is essential for correct communication. In this case, pins 3 (which corresponds to the transmit data of the cable's second pair) and 6 (which corresponds to the receive data of the cable's second pair) are designated for receiving data in this setup.

Understanding this pin configuration is crucial for troubleshooting network issues related to physical connectivity and ensuring that devices can effectively communicate over the Ethernet network.