Resource name translation

SNA requires that each network resource be identified by a unique name. This requirement also applies to a multiple-network environment, unless you are using network-qualified names. Network-qualified names are implemented by specifying the NQNMODE=NQNAME start option or defining cross-network resources with the NQNMODE=NQNAME operand on the CDRSC definition statement. If you do not use network-qualified names, cross-network resources cannot be identified by the same name. For example, a problem occurs when a logical unit in one network requires access to a resource in another network that uses the same name to identify a different logical unit.

The class of service (COS) name and the logon mode entry name are also important when establishing sessions. The same COS and logon mode entry names must be used in each of the interconnected networks to establish cross-network sessions.

To meet these naming requirements when you are connecting networks, do one of the following steps:

Redefine any duplicate resource names to preserve name uniqueness, and ensure that you use the same COS and logon mode entry names as the attached networks. (If you are using network-qualified names, you do not need to redefine resources to resolve duplicate names.)
Define any resources with duplicate names so that no more than one of them is specified (either by definition or by start option) with NQNMODE=NAME and the others are specified (either by definition or by start option) with NQNMODE=NQNAME.
Use the VTAM® alias selection function in the session management exit routine to translate any duplicate resource names to unique resource names, and to map unlike COS and logon mode entry names in one network to the proper equivalents in the other network. For details about the session management exit, see z/OS Communications Server: SNA Customization. (If you are using network-qualified names, you do not need to use the session management exit routine to resolve duplicate names.)
Use the NetView® alias name translation facility to translate any duplicate resource names to unique resource names and map unlike COS and logon mode entry names in one network to the proper equivalents in the other network. (If you are using network-qualified names, you do not need to use the NetView alias name translation facility to resolve duplicate names.)

The resource names that can be translated by the NetView alias name translation facility or in the session management exit routine are:

Logical unit names
Logon mode names
Class of Service names