Library /sys$common/syshlp/tcpip$ucp_help.hlb PING, Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 host

    Specifies the host to which the test packets are sent.
    Omitting host tests the TCP/IP Services software on the local
    node, as defined by the system logical TCPIP$INET_HOST.