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NSA3700 HA Setup with 2 Different ISP

Hi All, I am planning to setup 2*SonicWALL NSA3700 into HA for one of our client.

Unfortunately their ISP Fiber NTU device only have 1 downlink port. Is there any way I can configure SonicWALL in HA with 2 different ISP?

Category: Mid Range Firewalls


  • BWCBWC Cybersecurity Overlord ✭✭✭

    @AmanChanpura you can have multiple WAN interfaces in HA, all you need to do is connect each WAN Interface per ISP to a switch and have it seperated in its own collision domain.

    Switch A (or VLAN 900)
    Primary X1 + Secondary X1 + ISP CPE
    Switch B (or VLAN 901)
    Primary X2 + Secondary X2 + ISP CPE

    Because HA is Active/Standby only one Appliance is using the WAN at a time, you should not seperate WAN per Appliance. Having WAN A only connected to the Primary and WAN B only connected to the Secondary would cause interruptions.


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