Hello again, In OS9 you were allowed to utilize multiple VLT-domains Switch A& B would be in VLT-domain#1 while switch B & C could be in VLT-domain#2 . However it is practically pointless and more a side effect of the technology than a desired effect.In OS10 I'm not even sure it is even allowed but then again as stated it is a pointless design and not one that is recommended and thus not supported.   Remember VLT is not a stack and should by no means be incorporated as such.  
Is there ever a scenario where you might want to add more than one domain when you only have a single pair of switches? In the documentation, you only ever see one domain configured. I am curious. Currently I have a pair of S5148f running OS10   Thanks   Hatter
More than 1 VLT Domain for a single switch pair?