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

    Support: End
    Default: No router     Value: Set of LAN addresses
    IDs

    Manually entered IDs of routers. If this set is empty, the
    circuit will auto-configure the routers. This characteristic is
    supported only if the circuit's characteristic type is csma-cd.
    For Tru64 UNIX, a maximum of 5 routers can be in the set.

    set  [node node-id] routing circuit circuit-name -
         manual routers {address[,address...]}

    Example:

    set routing circuit csmacd-1 manual routers {aa-00-04-00-12-34}