This unsolicited message is issued at 60-second intervals as long as data flow continues to be stalled for an XCF connection. The stall was originally reported in an IST2116I message. The data flow is considered stalled because this node sent a pacing request to the partner node and a response has not been received. This might be an indication of an unresponsive partner or an internal software problem.
trlename is the name of the XCF TRLE.
cpname is the CP name of the partner node for this XCF connection.
All outbound data flow across this XCF connection is suspended until the stall is alleviated. If the stall persists, this message is issued every 60 seconds until the stall is alleviated. If the pacing response is received from the partner node, the stall is considered alleviated and message IST2118I is issued.
When more than 15 minutes has elapsed since a pacing request was transmitted to the partner node, the XCF connection will be ended. When the connection is ended, message IST1578I is issued to indicate that an inoperative condition was detected. VTAM® automatically attempts to re-establish connectivity to the XCF partner.
If the XCF data flow stall persists, VTAM or CSM storage might increase. To alleviate the storage problem, deactivate all of the users of this XCF connection by performing the following actions:
First, investigate if the partner node is overloaded or involved in activity that will prevent it from responding. If XCF data flow stalls are prevalent and persistent, take a dump of both nodes at the next occurrence, then contact the IBM® software support center.
z/OS® Communications Server SNA
You can display the module that issues a SNA message in the message by setting the MSGMOD start option to YES. See Adding the originating module to the message text for more information about the MSGMOD start option.
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