I posted a while back asking how to setup my multiwan situation and didnt get many replies but from the few i did get i managed to get something that is semi working but it is getting annoying so i am asking for your help. I am using the UTM as a virutal machine. i did a passthrough for the NIC carrying in my WAN connection from cable company. the other adapters are all virtual which connected to my LAN. I also have and LTE Modem. i have it attached to an asus wifi router. there are two reasons why i dont have it attached to sophos.. 1: i am not certain i could get it setup properly with the drivers and such 2: i have had my server witht he UTM crash before so the backup connection woudlnt work either. This way i have both hardware and connection redundancy.
my UTM is 192.168.1.1 and my asus router is 192.168.1.254. Other than turning off dhcp everything else is set to default settings. that means it also has NAT enabled.
so to setup multilink i created a virtual nic that is attached to my lan with the IP address 192.168.1.253 and assigned the default gateway under that interface as 192.168.1.254..
all behavior works normally but after a few mins the backup lte connection link state goes to error and wont work untill the asus router is restarted.. not sure why it does that.. help?
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