TL-R470T router failover return to primary if it is up
Hello,
I'm thinking to have TP-Link TL-R470T for failover. And need information on below question.
If I've two ISP and will defined 1st as Primary and 2nd as Backup.
If Primary ISP is down then failover will move network to backup line.
Now if Primary line turns UP after some time then will the network will be move to Primary link itself ?? or It will only move to primary if 2nd backup will fail ??
I'm asking because my 2nd backup line is not that much reliable.
If this model is does not have this function then please suggest other model.
Thanks,