Network issues.
Network issues.
Issues with SURFboard DOCSIS 3.1 Router. Two PCs connected via Ethernet, but only one receives 1000MB while the other gets 100. Switching cables between them on the router affects performance, not the cables or drivers. Still unsure and new to network problems. The Arris Router lists four 1GB ports as well.
They both support gigabit connections and can handle 1GB speeds. However, moving the cables on the router to a different location—like placing it where the other was—results in one PC getting 1GB while the other gets 100. It looks like only the primary port is delivering gigabit speeds.
Inspect the actual jack, port, and sockets on both sides—the cable modem and the back of the PC. Verify that the pins inside the sockets are correctly aligned, flexible, and won’t short to other pins. When a plug is connected to the Ethernet socket, those internal pins should slightly bend and make contact with the plug’s pins. Examine the cables too; ensure all contacts in the plugs engage properly with the eight wires. If one connection remains at 100 Mbps, it might indicate some wires aren’t transmitting data—this could stem from a faulty cable, damaged connectors, or defective Ethernet socket pins. For 100 Mbps speeds, only four wires need to function correctly in an Ethernet cable. In less common scenarios, performance dropping to 100 Mbps may result from faulty drivers, so consider checking those as well.
The device comes with either one or more gigabit ports. It's possible your unit only includes a single gigabit Ethernet and one Ethernet port. Could you tell me what model you're using?