Sorry, code levels as below:

Server: TSM 4.2.0.0 on AIX 4.3.3
Client: TSM 4.2.0.0 on NT4
DB2:            v7 fixpack 5
Qlogic FC catd is at firmware 1.61 and driver 8.00.08


On the client side there is nothing in the dsmerror.log other than

20-05-2002 22:33:11 sessRecvVerb: Error -72 from call to 'readRtn'.
20-05-2002 22:33:11 cuConfirm: Received rc: -72 trying to receive
ConfirmResp verb
20-05-2002 22:33:12 sessSendVerb: Error sending Verb, rc: -1
20-05-2002 22:33:12 sessRecvVerb: Error -72 from call to 'readRtn'.
20-05-2002 22:33:12 cuConfirm: Received rc: -72 trying to receive
ConfirmResp verb
20-05-2002 22:33:12 sessSendVerb: Error sending Verb, rc: -1