Linking a fresh router
Linking a fresh router
You're checking if your ISP's Eero Pro 6 works with your existing router in switch mode via the WAN port. You've got a new switch ready for more ports and plan to connect it via Ethernet through the wall. The TL-SG108 is labeled as plug-and-play, but you're encountering connection issues. After some research, you suspect a cross-over cable might be necessary. Before purchasing another one, consider if there are alternative solutions or troubleshooting steps you could try.
You don't require crossover cables. They are only useful when linking two devices directly, without routers or switches in between. This is mainly needed for 100 Mbps networks, and modern network cards can detect pairs automatically without them. Just connect the cable from your router to a switch port, then use other Ethernet cables on the remaining ports. For example, you could use your Eero Pro6 from the ISP, connect the old router's WAN port to the ISP device, and switch the new router into one of the switch ports in switch mode.
You can link a switch to any point in the network without special setup. Optimizations exist for bigger setups, but home use should be fine. Are there any restrictions on the IP addresses your router assigns? There seems to be some confusion about cross-over cables—maybe you’re unsure where to buy them. I doubt Amazon ads are reliable for this purpose. If you understand the process and have the right tools, you could build one yourself.