Library /sys$common/syshlp/nclhelp.hlb disable, xot (OpenVMS Alpha), sap, link  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    disable  [node node-id] xot sap sap-name link link-name

    Disables XOT communications with a particular remote system
    identified by the LINK's remote IP addres and remote RFC1613
    port number.  The sap-name and link-name are simple names
    which uniquely identify particular SAP and LINK instances.

    Example:

    show xot sap sap-0 link * remote ip addr
    disable xot sap sap-0 link link-0