Yes, it's feasible with one modem, one switch, and two routers.
Yes, it's feasible with one modem, one switch, and two routers.
I have a 1000mb modem and two routers connected in a chain. Sometimes the first router fails, then the second one stops working too. When this happens, I need to reset the router for it to regain a signal. I recently bought a basic TP-Link 5-port switch. My question is: can I connect the modem to the switch first, then move to the two routers? This way, if one fails, the other should still work. Your concern about how this will actually function is understandable. Any guidance would be really helpful.
It functions when your ISP supports multiple public IP addresses from the modem. This is typically a premium service requiring additional costs. Generally, the modem assigns one IP address per device, and you may need to restart it when switching routers.
Only if your ISP provides more than one IPv4/IPv6 address. Otherwise, you might set up a pfSense or VYoS device. In large organizations it's typical to use one router handling several private LANs, which reduces the need for multiple public IPs. Another choice is Double NAT, but that's generally not advised.
Yes, you can configure both routers as access points and link them directly to the modem without chaining them together.
For security or other purposes, consider running two gateway interfaces on the same NAT router. With a managed switch, assign ports according to the desired segments. For example, with an 8-port managed switch: Ports 1-4 belong to VLAN 10, connected via router interface 10.1.0.1 and switch port 1. Ports 5-8 are in VLAN 20, linked through router interfaces 10.2.0.1 and 10.2.0.0/24. You can route the public IP to the router for NAT or keep it at the modem with a private network between them. Choose the setup that suits your needs.
@herb I'm curious about your intentions. Could you clarify what you're aiming for? Also, please list the brands or models of all networking gear, starting with the modem and going further.