Kulbir, If you have multiple brokers already, you simply need to group those brokers into a collective (done on the Topology tab of the Control Center) and the brokers will share subscriptions and publications. What actually happens is that when a subscription request is received by one broker (say broker1), that broker will register itself as subscriber on the same topic/filter with all the other brokers in the collective. With that in place, if a message is published on that topic/filter to any broker, the broker (broker1) will get the message (since it's subscribed) and pass it along to any client registered with it. This helps optimize network traffic. You just need to understand that publications aren't really passed around to all brokers but are passed around based on who's subscribed. The Planning and Install guide has some additional information on Broker networks and collectives. Hope this helps.
Lanny Lanny Heidenfelder MQSeries/WMQI Instructor and Developer IBM Learning Services [EMAIL PROTECTED] "Kulbir S. Thind" <[EMAIL PROTECTED]>@AKH-WIEN.AC.AT> on 06/06/2002 09:25:57 AM Please respond to MQSeries List <[EMAIL PROTECTED]> Sent by: MQSeries List <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: Subject: Pub/Sub in MQSI topology Hi, Although I have been using MQSI for some time I have never used the Publish/Subscribe features yet and therefore have a design question. If we had a topology of MQSI brokers inter-connected and we wanted to implement pub/sub on them would we be able to configure MQSI to replicate publications and subscriptions automatically between the MQSI brokers or would we have to design and develop our system to do that? Regards, Kulbir. 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
