I will have 2 sim cards with different carrier provider for the 4g modem and 2 mikrotik routers (Master and backup).
Master= LtAP mini LTE
Backup= hap ac2
Can someone check the schematic and advise me if the architecture is correct or which modifications do i have to made.
Next question will be for VRPP configuration and modems backup
Looks reasonable enough. I’d recommend trying various config pieces out first. Some comments:
How you want to “failover” between the SIM cards is the main thing that’s a variable in your diagram. There is only one modem - so you’ll need a script if you want to change the active SIM card. Searching the forum has some good example and further food for thought on this one.
The type of VPN your going to use to the “ISP Router” is what may drive your configuration of the LtAP…depending on the type of VPN you may have to do different things to what looks like bridge “VLAN 100” back though the “ISP Router”.
VRRP isn’t hard but likely not that helpful at this point. Since the LtAP mini provides the internet the backup route can’t do much other keep local LAN services working (DNS DHCP & VLAN routing etc). I like VRRP but it’s adding some complexity now that might be best to add later.