Re: Losing Message Sequence Number Sync
NO!!! Only one IP address. That's the whole point of the F5 Big IP. The sending Queue Manager (supposedly) knows nothing about the two receivers. > -Original Message- > From: Chan, Ian M [mailto:[EMAIL PROTECTED] > Sent: Thursday, September 18, 2003 8:59 PM > To: [EMAIL PROTECTED] > Subject: Re: Losing Message Sequence Number Sync > > > I don't know about the F5 BigIP. However, are the 2 unix > boxes running different IP addresses? > Regards, > > Ian > 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
Re: Losing Message Sequence Number Sync
I don't know about the F5 BigIP. However, are the 2 unix boxes running different IP addresses? I have seen a situation that between QmgrA(AS/400) and QmgrB(NT), I shutdown the NT box and then bring up the DR NT box with the same Qmgr name and same channel names except the IP address is different. The channels can be brought up without seqnum problem as I can see there is another pair of channel 'instance' maintained. At least I guess, if the IP addresses are different, it should work on one direction with one sending instance per unix box and two receiving instances on the connecting qmgr. As mentioned by Bob, it's working with MQ 5.3 on os/390 (how??). So may be it's due to version of FAP? or the setting on AdoptMCACheck??? Regards, Ian -Original Message- From: eugene rosenberg [mailto:[EMAIL PROTECTED] Sent: Friday, 19 September 2003 11:31 AM To: [EMAIL PROTECTED] Subject: Re: Losing Message Sequence Number Sync You are obviously right and your network administrators are wrong. If you have a simple structure of a single sending queue manager, BigIP and two receiving queue managers, it means that the same single channel basically has one sending MCA and two receiving ones. Each is counting its own sent or received messages and only the summary of the sequence numbers of the receiving MCAs will be equal to the sequence number of the sending MCA. Basically if round-robin algorithm is used the channel will be in retry with the second sent message. Eugene Rosenberg --- Bob Kasischke <[EMAIL PROTECTED]> wrote: > Thanks Eugene. Yes we are using a F5 BigIP and the > network admins claim > they have it working on the message level. My > experience is the same as > yours: we are getting message sequence number > problems. > > > -Original Message- > > From: eugene rosenberg > [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, September 17, 2003 7:43 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Losing Message Sequence Number Sync > > > > > > If you are talking about F5 BigIP, I used them in > MQ > > network. But you cannot use them for load > balancing on > > the message level since you will experience > channel > > sequence number problems. However, they can be > used to > > load balance on the connection level. Each channel > > connection can be considered as TCP session and > all > > messages within the session should go to the same > > queue manager. > > > > Eugene Rosenberg > > > > --- Bob Kasischke > <[EMAIL PROTECTED] wrote: > > > Our site is using a "F5 Load Balancer" in our > network. > > > > > > Using this box we are able to setup up > identical, duplicate Queue > Managers > > > on two Unix servers. The F5 will load balance > work between the > > > queue managers. > > > > > > The problem is we lose message sequence number > > > synchronization when the F5 switches between > unix boxes for some > versions of > > > MQSeries but it is not a problem when using V5.3 > on IBM > > > mainframes. > > > > > > Does anybody know what I am talking about? If > so > > > then how does the mainframe maintain sync? > > > > > > > > > > > > Robert S. Kasischke > > > 415-243-6975 > > > > > > > > > > > > > > > __ > > Do you Yahoo!? > > Yahoo! SiteBuilder - Free, easy-to-use web site > design software > > http://sitebuilder.yahoo.com > > > > 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 __ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com 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
Re: Losing Message Sequence Number Sync
You are obviously right and your network administrators are wrong. If you have a simple structure of a single sending queue manager, BigIP and two receiving queue managers, it means that the same single channel basically has one sending MCA and two receiving ones. Each is counting its own sent or received messages and only the summary of the sequence numbers of the receiving MCAs will be equal to the sequence number of the sending MCA. Basically if round-robin algorithm is used the channel will be in retry with the second sent message. Eugene Rosenberg --- Bob Kasischke <[EMAIL PROTECTED]> wrote: > Thanks Eugene. Yes we are using a F5 BigIP and the > network admins claim > they have it working on the message level. My > experience is the same as > yours: we are getting message sequence number > problems. > > > -Original Message- > > From: eugene rosenberg > [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, September 17, 2003 7:43 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Losing Message Sequence Number Sync > > > > > > If you are talking about F5 BigIP, I used them in > MQ > > network. But you cannot use them for load > balancing on > > the message level since you will experience > channel > > sequence number problems. However, they can be > used to > > load balance on the connection level. Each channel > > connection can be considered as TCP session and > all > > messages within the session should go to the same > > queue manager. > > > > Eugene Rosenberg > > > > --- Bob Kasischke > <[EMAIL PROTECTED] wrote: > > > Our site is using a "F5 Load Balancer" in our > network. > > > > > > Using this box we are able to setup up > identical, duplicate Queue > Managers > > > on two Unix servers. The F5 will load balance > work between the > > > queue managers. > > > > > > The problem is we lose message sequence number > > > synchronization when the F5 switches between > unix boxes for some > versions of > > > MQSeries but it is not a problem when using V5.3 > on IBM > > > mainframes. > > > > > > Does anybody know what I am talking about? If > so > > > then how does the mainframe maintain sync? > > > > > > > > > > > > Robert S. Kasischke > > > 415-243-6975 > > > > > > > > > > > > > > > __ > > Do you Yahoo!? > > Yahoo! SiteBuilder - Free, easy-to-use web site > design software > > http://sitebuilder.yahoo.com > > > > 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 __ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com 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
Re: Losing Message Sequence Number Sync
Thanks Eugene. Yes we are using a F5 BigIP and the network admins claim they have it working on the message level. My experience is the same as yours: we are getting message sequence number problems. > -Original Message- > From: eugene rosenberg [mailto:[EMAIL PROTECTED] > Sent: Wednesday, September 17, 2003 7:43 PM > To: [EMAIL PROTECTED] > Subject: Re: Losing Message Sequence Number Sync > > > If you are talking about F5 BigIP, I used them in MQ > network. But you cannot use them for load balancing on > the message level since you will experience channel > sequence number problems. However, they can be used to > load balance on the connection level. Each channel > connection can be considered as TCP session and all > messages within the session should go to the same > queue manager. > > Eugene Rosenberg > > --- Bob Kasischke <[EMAIL PROTECTED] wrote: > > Our site is using a "F5 Load Balancer" in our network. > > > > Using this box we are able to setup up identical, duplicate Queue Managers > > on two Unix servers. The F5 will load balance work between the > > queue managers. > > > > The problem is we lose message sequence number > > synchronization when the F5 switches between unix boxes for some versions of > > MQSeries but it is not a problem when using V5.3 on IBM > > mainframes. > > > > Does anybody know what I am talking about? If so > > then how does the mainframe maintain sync? > > > > > > > > Robert S. Kasischke > > 415-243-6975 > > > > > > > > > __ > Do you Yahoo!? > Yahoo! SiteBuilder - Free, easy-to-use web site design software > http://sitebuilder.yahoo.com > > 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
Re: Losing Message Sequence Number Sync
If you are talking about F5 BigIP, I used them in MQ network. But you cannot use them for load balancing on the message level since you will experience channel sequence number problems. However, they can be used to load balance on the connection level. Each channel connection can be considered as TCP session and all messages within the session should go to the same queue manager. Eugene Rosenberg --- Bob Kasischke <[EMAIL PROTECTED]> wrote: > Our site is using a "F5 Load Balancer" in our > network. > > Using this box we are able to setup up identical, > duplicate Queue Managers > on two Unix > servers. The F5 will load balance work between the > queue managers. > > The problem is we lose message sequence number > synchronization when the > F5 switches between unix boxes for some versions of > MQSeries but > it is not a problem when using V5.3 on IBM > mainframes. > > Does anybody know what I am talking about? If so > then how does the > mainframe maintain sync? > > > > Robert S. Kasischke > 415-243-6975 > > > __ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com 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
