Hello,
- Exactly. If you want to use link aggregation you have to create a LAG for the NICs that will be participating.
- You will need to trunk the ports and assign the same VLAN access to them if you want both ESXi hosts to communicate with each other.
- It does, but not in a fashion I presume you are thinking. The LACP support comes in with "Load balancing via IP Hash" in vSwitch setting, but it does not make 2x 10GbE twice the speed. It just load-balances the outgoing traffic from VMs to different vnic depending on its IP. Otherwise LACP is there for failover purposes should one vnic fail, not to ncrease maximum speed. But if you have 10GbE I think this wouldn't be that needed anyway.
You can achieve great performance by having your traffic split between more NICs - VM traffic, Storage and vMotion comes to mind but the gap slowly closes with the advent of converged network adapters.
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