This works but it is not an elegant solution for detecting which ISP is up/down.
I could assign both IP/subnet to my single ethernet interface and I could specify static routes. Now, My computer (OS-Windows) has only one ethernet NIC but I want to use both of the ISPs and I want to implement automatic failover in case one ISP is down. Now, I don't have the LCO's original topology but here is a possible simplified one:
I can specify any ISP IP/subnet on my Ethernet interface and my data will go through that ISP. I have paid for both ISP and got connection details from both of the ISPs. Users don't need to change physical connection if they change ISP). Customers can pay for any preferred ISP and use that ISP (physical fiber line is the same from the LCO switch to customer home for both ISPs. My Local Cable Operator (LCO) provides last mile infrastructure for 2 different ISPs. Little bit Background (Why I want to do this)
