For DFM to conduct a network conversation with a DDM source implementation, each system in the conversation must know its partner's LU name and logon mode information. Establishing partner information involves the following steps:

1. You need to define on the partner (source) system the local LU, logon mode entry, and partner LU (the LU associated with DFM for z/OS®). What conventions and utilities you use for defining this information depends on what platform the partner system runs. On a DDM client system, for example, you use Communications Manager for specifying network information.

   The logon mode name on the partner system must match a logon mode table entry name defined to VTAM® and associated with the VTAM APPL definition. This association can be explicit in the APPL MODETAB definition statement or implicit in the VTAM-supplied default logon mode table ISTINCLM.

   When the partner system sends an APPC allocate call to initiate a conversation with DFM, it sends the name of a logon mode definition that must match a logon mode entry name defined to VTAM. If the partner system is a DDM client, you must use the QPCSUPP logon mode entry name.

2. On the target z/OS system, you need to identify to VTAM the name of the partner LU. This name must match the local LU name that you have established on the partner system.

   For information about defining partner information to VTAM, see VTAM Network Implementation Guide , SC31-6434; VTAM Resource Definition Samples , SC31-6414; and VTAM Resource Definition Samples , SC31-6414.