SNA Server: Event 18 Includes Sense Data = 00320008

SYMPTOMS

If the host sends an UNBIND in response to an SNA Server BIND attempt to activate independent LU6.2 sessions, SNA Server logs the following event into the Windows NT application event log: where 0032 means UNBIND, and xxxx is the unbind type. Under SNA Server 2.1, the "unbind type" is converted internally as follows:

Event log    Actual UNBIND type
-------------------------------
0007          FE   session failure
0008          0F   cleanup
0009          06   invalid session parameters
0010          0C   unrecoverable LU failure
				

Under SNA Server 2.11 or 3.0, the actual unbind type is logged in the "sense data" field in Event 18.

Note that 0032xxxx is not SNA Sense data.

NOTE: Chapter 5 of the "IBM SNA Formats Guide" lists all unbind types and their format. The most common unbind type logged during session activation is: This indicates the route extension used by the LU-LU session has become inoperative, thus forcing the deactivation of the identified LU-LU session.

NOTE: The Sense data field includes an SNA sense code if the host responds with SNA sense data instead of an UNBIND. SNA sense data codes are listed in Chapter 9 of the "IBM SNA Formats Guide".