We had a problem with PIX firewall and MQ clients connected through it. We solved it by increasing the time intervals that the pix was using to disconnect the users going through it. Look at these values:
timeout xlate 3:00:00 conn 1:00:00 half-closed 0:10:00 udp 0:02:00 timeout rpc 0:10:00 h323 0:05:00 timeout uauth 0:05:00 absolute -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 28, 2004 3:19 PM To: [EMAIL PROTECTED] Subject: Re: TCP error Thanks for the many responses! Our MQ servers are behind a PIX firewall in a special DMZ, The clients all run the same application and it is written using the C++ library and disconnect is the last thing called before the app terminates. Also, each object that creates a connection should close the connection when the object gets cleaned up. The information from Bill, show below looks very interesting, does the PIX firewall series do this ? Sid -----Original Message----- From: Bill Anderson [mailto:[EMAIL PROTECTED] Sent: Thursday, 29 April 2004 12:41 AM To: [EMAIL PROTECTED] Subject: Re: TCP error Don't be so quick to judge the MQ server as the problem. We just recently resolved that (almost) exact problem on AIX. The error code for AIX is AMQ9208, but it is still a tcp/ip reset. We tracked the problem down to a CSS router (Cisco equipment), not the MQ server. The CSS was reclaiming inactive tcp socket connections at an alarming rate and reeking havoc with my MQ servers. To make matters worse, it has a rather complex algorithm for determining if and when to send a reset. If it has plenty of resources available for new connections it may leave things alone. but when the system is busy, look out! cuz its going to get real stingy and kill off anything that has been idle for much less time than a heartbeat interval. I know that don't solve your problem, but you may want to look beyond the MQ server. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
