Mulit WAN Failover on MPLS

[mcaliff]

Hello,

I have pfSense routers on a multi-site MPLS network.  Two sites have direct internet access. One of those sites provides internet access for the remaining sites. The routers have 2 wan interfaces but the provider's L2 switch only provides 1 connection.  I need to know if it is possible to create a failover to the second site that has direct internet access.  Below is a link to a sketch (hope it works) that might explain it better:

https://drive.google.com/open?id=0B3Omxw2d3chwVFlPUjExZ0NPYzg

And if it is possible can someone point me to a guide.  I have searched high and low for one that covers doing this and can't find one.

Thank you!

Mike