How many switch groups can be created on Cloud Router Switch?
Is it possible to use the hardware VLAN Rule table ( http://wiki.mikrotik.com/wiki/Manual:Switch_Chip_Features#Rule_Table )? How many rules can be created?
CRS125 can have maximum 12 switch groups because switch group must have at least 2 ports.
That VLAN rule table does not apply to CRS125, the features which will allow similar functionality are currently being developed.
Will this VLAN processing run at hardware level and is capable of wire-speed?
yes, it will.