I'm setting up a 2-host VMWare 5.1 Cluster to use a vDS (Virtual Distributed Switch) with LACP enabled, over 4 NICs (2 per host).
In times past, when I've used VMWare Standard Switches with Static LAGs, each host got their own LAG Group on the physical switches. So for the same scenario (but not using LACP or vDS) I would have two LAG groups on the switch side for the 2 hosts. In theory each LAG group would span just 2 switches if I wanted switch redundancy.
All the resources I could find on internet seem to say that vDS in VMWare 5.1 is limited to one LACP group per vDS. Is that saying that on the physical switch side, you define 1 LACP group that handles 4 ports together as one unit? Or do you still have 1 LACP group per host (so 2 LACP Group in my scenario)?
If you have to define 1 LACP group on the switch side, does that mean that as you add each new host to the same vDS, you keep having to grow that one LACP group to add ports potentially from many different switches?