I have a client that has contracted 2 ISPs for a small office with 8 workstations. He does web site development but not the hosting. He wants me to setup the following so that the second ISP is always available as a backup:
On the modem/router of ISP-1, set the LAN IP to 192.168.0.1 and disable DHCP.
On the modem/router of ISP-2, set the LAN IP to 192.168.0.2 and disable DHCP.
Connect each modem/router by cables to LAN ports on a Belkin N+ router and enable DHCP.
All the workstations have fixed IPs set in each workstation's network config. The workstations are 4 Macs, 2 Windows, 2 Linux Ubuntu. Each programmer will choose which ISP to use by specifying the gateway (192.168.0.1 or 192.168.0.2) in the workstation network config.
FYI The client used to have a Peplink Balance 20 before my time. I put in a TP-Link TL-R470T+. The client just wants to pull the TP-Link and try this. Any chance it will work? What can I tell him?
The next objective is that the head programmer (Linux) can SSH to the Test Bed Web Server (also Linux) from outside the office via either ISP.