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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / AX2012 AOS Cluster and...
Microsoft Dynamics AX (Archived)

AX2012 AOS Cluster and webservices question

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Posted on by Grzegorz Skrzypczyk 225

Hello,

I have an AX 2012R3 configuration with 4 AOS servers - aossrv101, aossrv102, aossrv103, aossrv104

They are in an AOS load balancing cluster without a load balancer. These AOSs are primarily for user client connections.

I then have an external application which accesses AX via a webservice, using an URL like the one below: 


net.tcp://AOSSRV103:8101/DynamicsAx/Services/MyService

My question is - will the load balancing have any impact on how the webservice request is handled? Given the url - will that request be processed on the server aossrv103? Or will the load balancing forward the request to a different AOS?

I am aware that the above configuration is not necessarily best practice, but I need to know how AX will handle this. I can tell you that it is to workaround a certain technical problem but would prefer not to go into any more details.
 

Grzegorz

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  • Verified answer
    Vilmos Kintera Profile Picture
    Vilmos Kintera 46,149 on at
    RE: AX2012 AOS Cluster and webservices question

    If you point to a specific AX AOS, then that AOS will handle the request. AOS-based load balancing is only for establishing regular client connectivity.

    If you want services to be load balanced, you have to use a hardware- or software based balancer, or the one that comes with Windows Server - Network Load Balancer.

    For the exact same reason we use 2 AOSes for our AX users with the traditional load balancing cluster setup (without dedicated load balancer AOS service), and a hardware NLB for our AIF calls that are services by another 2 set of AOS instances.

    We are also using 2x Windows NLBs for connectivity between our SSRS and AX AOS instances in a scale-out deployment.

  • Grzegorz Skrzypczyk Profile Picture
    Grzegorz Skrzypczyk 225 on at
    RE: AX2012 AOS Cluster and webservices question

    Thanks Vilmos. In our specific scenario we do not want load balancing for AIF calls. Your response seems to answer my question. Once again thanks.

  • Verified answer
    Vilmos Kintera Profile Picture
    Vilmos Kintera 46,149 on at
    RE: AX2012 AOS Cluster and webservices question

    No worries, kindly mark the answer on the right to resolve the topic.

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