Library /sys$common/syshlp/nclhelp.hlb set, nsp, retransmit_threshold  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Default: 12		Value: 1-65535

    Maximum number of times a source nsp entity is to restart an
    expired retransmission timer before the remote node is to be
    considered unreachable. When the threshold is reached, NSP
    sets the confidence variable to false.

    set [node node-id] nsp retransmit threshold integer

    Example:

    set nsp retransmit threshold 12