LAG (LAGG) is a Good Thing! 

Not all LAG is bad! Add LAG (LAGG), link aggregation to your network to increase throughput in places where bottlenecks are possible! it is also helpful as a failover if network interfaces fail, but that scenario is less likely to occur unless you have an old or faulty switch.
Learn more:
--------------------
Setting up a LAGG on a network switch: homenetworkguy...
Setting up a LAGG on Proxmox: homenetworkguy...
homenetworkguy...
EP02