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

    Support: L1,L2,IP
    Default: 100           Value: 1-65535

    Minimum time, in milliseconds, between transmission of successive
    ICMP source quench packets.