Connect two ISPs to the same network.
Connect two ISPs to the same network.
You're seeking a reliable backup internet solution for your business when the main connection fails. The goal is to ensure continuous connectivity, especially since downtime can impact operations. Think of the primary connection as your main source and the secondary as your alternative. To achieve this, you'll need a setup that allows seamless switching between both connections without interrupting services. Consider exploring technologies like dual-band routers, VPN gateways, or cloud-based failover systems to maintain uptime effectively.
Without a router you won't achieve much. However, you can rely on protocols such as VRRP (when not using Cisco gear, you gain additional choices). https://en.wikipedia.org/wiki/Virtual_Ro...y_Protocol
Consider a dual-wan router or you might build a PFSSL with dual NICs. Personally, I've tried both, depending on your needs, they can be adapted to nearly any setup available. The ones I've used before are http://support.dlink.com/ProductInfo.aspx?m=DI-LB604 and https://www.tp-link.com/us/products/deta...480T+.html. I don't believe you can locate an older DLink dual-wan router. For TP-Link, there are more affordable models like the R470+, which support four WANs.
I'd have the ability to connect both main and backup links to a dual WAN setup, then route the dual WAN through a switch.
You connect it to each port individually, like this: ISP 1 WAN Port 1, ISP 2 WAN Port 2. Configure the link using round robin, failover, or load balancing.
Are both ISP links connected via the identical local exchange and shared roadside equipment? If yes, combining them likely offers minimal redundancy beyond what the ISPs provide themselves. It’s wiser to contact a single ISP directly to assess their redundancy and service level agreements.