Hi,
I have just purchased a Huawei E3372 Modem - it seems to be a NAT one despite ordering a PPP version, but either way. Still struggling with setting this up for a Failover WAN link.
I also have 2 other WAN links - WAN1 (VSDL) & WAN2 (Ethernet). I'm wanting to retire the WAN1 and go to a 4G Modem to save money on a backup Internet link. I don't want to failover everything to the Modem if WAN2 goes down, only certain essential devices.
I've set it up on WAN3 and receive a NAT IP (192.168.8.100). If I create a load balance rule for a single device (say iPad) and nominate that WAN and perform a whatsmyipaddress.org I can tell that a) I'm getting an IP address (213.x) from the modem and Internet traffic is working.
The issue comes if I unplug my WAN2&WAN1 link. My iPad no longer picks up the internet, yet I can see that the WAN3 is still up. Now at this point there should be no failover rules in place because technically I haven't failed over. If I do a Load Balancing Diagnosis, its going out on the same rule it was before, but now, no Internet. If I plug the WAN1&2 back in, I get internet.
I can only think that there is DNS traffic going through WAN1 or 2. Anyone any ideas?
I haven't even managed to get my normal load balance rules to failover to the new WAN3, so for the moment, just trying to sort out this particular issue.
