. . "In one embodiment of the invention, each VGUID object (i.e., VGUID A (208), VGUID B (206), VGUID C (204)) includes information such as the version number for that particular version of the object (200), the previous version number associated with the previous VGUID object, the identity of the updating node, signatures and keying material, information identifying the AGUID object (202), etc." . .