RE: Load balancing BT server 2004

From: DaveC (DaveC_at_discussions.microsoft.com)
Date: 01/06/05 

Date: Thu, 6 Jan 2005 11:25:02 -0800

Elday,

e have done some further testing and found out that what you said in your
response about the TCP connection is true (the keep-alives keep the connection
open forever). Our BigIp consultant suggested that we ask MS to see if
there is a way to tear down the TCP connection after each request (thus
allowing the BigIp to load balance each request). Do you know if this is
possible?

Dave

"Eldar Musayev (MSFT)" wrote:

>
> Well, if you send messages to different queues (Biztalk receive locations),
> then it should be load balanced ok. In this case, check your F5
> configuration. For reference, MSMQ port is 1801.
>
> If you send all messages to the same queue (recieve location in
> BizTalk)from the same sender/queue, then you have a problem whether you are
> using BizTalk or Windows MSMQ. The reason is that exactly once in order
> delivery cannot send the first message to one machine and the second one to
> another -- it will break the order. See more in my blog at
> http://weblogs.asp.net/eldarm/, September 17 post. That also comes from
> the way MSMQ works. When sending from host Ato host B queue C, it
> establishes TCP connection. This is the moment where load balancing
> happens. After TCP connection is established, all following messages for
> queue Ñ from host A to host B go through this keep-alive point-to-point
> connection until it is broken for some reason.
>
> Hope, this clarifies the picture. Regards,
> Eldar
>
>
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
> EBusiness Server Team
> --------------------
> >> Thread-Topic: Load balancing BT server 2004
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> >> From: "=?Utf-8?B?RGF2ZUM=?=" <DaveC@discussions.microsoft.com>
> >> Subject: Load balancing BT server 2004
> >> Date: Tue, 28 Dec 2004 16:35:02 -0800
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> >>
> >> I have a three tier application. The web tier communicates with the
> Biztalk
> >> 2004 tier using MSMQT. We currently have 3 Biztalk machines. Each of
> the
> >> machines has the same functionality on them. We would like to load
> balance
> >> the MSMQT messages across these three machines. We have an expensive
> BigIP
> >> load balancer from F5. We want to use the F5.
> >>
> >> We have experimented with load balancing the MSMQT by configuring the F5
> to
> >> listen on all ports. It seems that once a web box sends a message to
> one of
> >> the BT boxes, all the requests from that box will be routed to that same
> box.
> >> We would like each request to be routed to another box.
> >>
> >> My question is has anyone been able to successfully load balance MSMQT
> >> requests using F5? If so then is there some configuration on either the
> F5
> >> or BT Server that must be made to make this work?
> >>
> >> Thank you
> >>
>
>