How to Configure two Sophos firewall with two ISP under Single LAN

Question

Dear Professionals 
 
 We are in process to configure a new Sophos Firewall with new ISP. Our existing network already using one Sophos device with one ISP and single LAN. So technically, We will have two Sophos devices with two ISP for each under single LAN. 
 Why we are going to New Sophos firewall: Actually we are creating a standalone Lab with its own firewall and ISP , at the same time we also want to use existing network and ISP. 
 So pls guys suggest a best possible solution. 
 
 Thanks 
 Harendra Kumar

Aditya Patel · Answer

Hi Harendra , 
 You may need to configure an alternate adapter configuration to work with two ISP gateway. Does the location where you add the XG firewall use DHCP? If so then you may need to configure a L3 Switch to Load balance or Gateway failover between to two .