Network Load Balancing with MSMQ

Hi,

We have our application that reads from MSMQ and process messages. We have
deployed our application at two servers that are clustered using NLB. But the
issue is that the message from external application has been written to one
machine all the time. Other server is doing nothing. Does MSMQ manages some
kind of pooling or what.

Could anyone help on this.

Thanks
Mubashir

"Mubashir Khan" <> wrote in message
newsBA3BA15-700F-4BF2-90CF-...
> Hi,
>
> We have our application that reads from MSMQ and process messages. We have
> deployed our application at two servers that are clustered using NLB. But
> the
> issue is that the message from external application has been written to
> one
> machine all the time. Other server is doing nothing. Does MSMQ manages
> some
> kind of pooling or what.
>
> Could anyone help on this.

If it is only one server feeding the queue, then, yes, this is expected
behavior.

--
Russ Kaufmann,
MVP, MCSE: Messaging and Security, MCT, MCITP, MCTS and other stuff

ClusterHelp.com, a Microsoft Certified Gold Partner
Web http://www.clusterhelp.com
Blog http://msmvps.com/clusterhelp

Russ is correct. NLB requires a large population of clients for load
balancing to become useful. Large is a weak term, but what NLB does it
calculates a hash fro the client IP, and in some cases client port and then
checks what node owns the bucket this client maps to. With few clients you
can see chances are large that trafic from multiple source IPs might end up
in the same bucket.
Vladimir
Clustering & HA
Microsoft

"Russ Kaufmann" <> wrote in message
news:1402EAF4-B2FF-46FD-86C3-...
> "Mubashir Khan" <> wrote in message
> newsBA3BA15-700F-4BF2-90CF-...
>> Hi,
>>
>> We have our application that reads from MSMQ and process messages. We
>> have
>> deployed our application at two servers that are clustered using NLB. But
>> the
>> issue is that the message from external application has been written to
>> one
>> machine all the time. Other server is doing nothing. Does MSMQ manages
>> some
>> kind of pooling or what.
>>
>> Could anyone help on this.
>
> If it is only one server feeding the queue, then, yes, this is expected
> behavior.
>
> --
> Russ Kaufmann,
> MVP, MCSE: Messaging and Security, MCT, MCITP, MCTS and other stuff
>
> ClusterHelp.com, a Microsoft Certified Gold Partner
> Web http://www.clusterhelp.com
> Blog http://msmvps.com/clusterhelp
>