i've 4 server as edge and 2 server as origin. My clients stream to origin1 and have a backup set in origin2 (FMLE).
The 4 server are configure as load balancer sender to send the info to the origin1 and origin2.
At runtime the only server origin active is the origin1 and the origin2 is used if there's a fault (The FMLE switch automatically to the origin2)
If i setup each edge server to point with the "pipe" to the origin1 and origin2, when there's no stream active in the origin2, the edge server
skip the origin2 and go to the active stream published in the origin1 ? or i must have the origin1 and origin2 with active stream ?