I Have a Site that currently has 2 ISP's. A ISP1, which is there main line(Due to higher Bandwidth), and a ISP2. They both have static IP's. Currently when ISP1 goes down, the router flips over to ISP2 and when ISP1 is back active it flips back. They have a Site to Site VPN set up to a place that periodically sends files to them via the IPSEC Tunnel. However it is only active to the Comcast Connection.
ISP1 is sometimes flakey in terms of uptime. Especially late at night when the other company is sending these files. I was wondering if both ISP1 and ISP2 having IPSEC Tunnels established on their respective Interfaces. Would there be a way to set up routing on the other companies side to Route to ISP2 if ISP1 is not active. They could do this manually but the other companies current process is completely automated. Without looking into BGP which is out of the question. Is there a way to route based on link activity and say. After x amount of packet loss send to Route to ISP2? This other company is very hesitant to change that automated process but their networking team is a little more flexible and being able to make changes on their side to figure this out.
Any Ideas will help! Thank you!
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