When TE downed, "Response code 79 " error message is outputted in aefuf log.
In what kind of situation is this "Response code 79" outputted?
The Response code 79 is a "ECONNREFUSED" (Connection refused) on AIX.
What has happened is that the aefuf has lost its connection to the aefad process, possibly because the aefad has stopped. The aefuf is trying to reconnect to the aefad and its getting the error in the aefuf logs.
In this situation it is best to stop any and all aefuf's connected to the affected aefad, make sure that the affected aefad is stopped and then restart all the processes again, ensuring that the aefad is started first.