Essentially a basic setup is: PC>Switch(optional)>Balance>2 ISPs.
For the basic setup described. The connection type for both with be DHCP. Basically the balance WAN1 ip will be obtained from the ISP router. Also the WAN2 IP will be obtained from it’s ISP router.
You can view the IP that they are given if you log into the balance and it will show there IP obtained on the dashboard. They will need to be unique IP’s. For example WAN1 192.168.1.1 and WAN2 192.168.2.1.
Also, the balance by default will act as the DHCP server. This will hand out IP’s to your PCs on the LAN side. Anything on inside will obtain a IP address via the balance essentially from the DHCP Range. If your PC’s on the inside are setup to obtain a IP address automatically they will pull a IP from the DCHP range defined on the balance. If they are static you will need to manually assign them a IP address that is apart of the DCHP range and then defining the default gateway address to be the LAN IP of the Peplink. **In addition your LAN and WAN will need to be in unique subnets. If you change the LAN interface of balance to 192.168.2.1 this will clear up the issue.
If you have more questions don’t hesitate to ask. Otherwise if you are experiencing issues still please open a support ticket and one of our support members will be able to take a closer look at the issue: http://cs.peplink.com/contact/support/