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

    Default: 0-00:00:15.000    Value: 0-00:00:01.000-0-00:10:00.000

    Specifies the amount of time the node waits for a response to a
    WAN synchronization request before sending another request and
    declaring a global server to be unavailable. The node sends three
    requests before declaring a non-responding global server to be
    unavailable.