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["Sergey Skripnick" <sskripnick@xxxxxxxxxxxx>]

Sure you can use GRE tunnel on unmanaged switch.

> Hello, i'm new in here
> - Does vlan tagging that connected between network node and compute node  
> need a manageable switch?
> - Can i used GRE tunnel on unmanaged switch? is that possible? or vlan  
> configuration on unmanage switch? so i can add more compute node.