Connection status records

The configuration services XID routine can monitor connection and disconnection times of switched devices. When the connection status feature has been activated, the exit writes to the CSDATA file. This file contains 80-byte records that are written directly from the connection status vector that VTAM® passes to the exit. The connection status feature writes a record to the CSDATA file when a resource, that was processed by the dynamic build feature, connects or disconnects from the network. A record includes fields that identify:

Whether the resource is connecting or disconnecting
The name of the line to which the resource is connecting or was connected, or, for DLUS-supported resources, the name of the DLUR
The name of the PU
A timestamp, in time-of-day format, that indicates when the connection or disconnection occurred
The PU's station ID and CPNAME

You can use records to determine which PU gained access to the network, over which line, and at what time. You can also use records to determine how long a PU was connected to the network. You might want to write a tool to extract data from the file and create a summary report of the activity of resources that are dynamically connecting to and disconnecting from the network.

The format of a record in the CSDATA file is identical to the format of the connection status vector defined in the ISTEXCCS module. A record is padded on the right with enough blanks (X'40') to complete an 80-byte record.