You can define a local SNA device either statically or dynamically.

Take the following steps to statically define a local SNA device:

1. Define a local SNA major node by coding a VBUILD definition statement for the major node and a separate PU or LU definition statement for each minor node.
2. Code a PU definition statement for each physical unit (such as a cluster controller) in the major node.
   Notes:

   1. A physical unit and all its logical units must be defined within a single major node.
   2. When activating a physical unit in a local SNA major node, supply the channel device name of the physical unit unless you have defined it in the PU definition statement. You can also specify the channel device name to override the value in the PU definition. To supply the channel device name, use the U operand of the VARY ACT command when activating the physical unit.
3. Code an LU definition statement for each logical unit placed after the associated PU definition statement. When you define a logical unit that logs on to VM, its name cannot be the same as any VM user ID in the system.