set  [node node-id] loopback application -
           maximum mirrors integer
    Example:
    set loopback application maximum mirrors 10
    Maximum Mirrors is an integer (0-4294967295) specifying the
    maximum number of loop mirrors supported.  The default value
    of 0 means the node supports an unlimited number of mirrors.
    For Tru64 UNIX to limit the number of loop mirrors, use the
    maximum instances characteristic of the session control application
    mirror entity.