Configure SLB VIPs through VMM service templates

Software Defined Networking (SDN) in Windows 2016 can use Software Load Balancing (SLB) to evenly distribute network traffic among workloads managed by service provider and tenants. VMM 2016 only supports deploying SLB Virtual IPs (VIPs) using power shell.

System Center 1801 - Virtual Machine Manager (VMM) supports configuration of SLB VIPs while deploying multi-tier application by using service templates and also supports both public and internal load balancing.

Before you begin

Ensure the following prerequisites are met:

Procedure to create SLB VIPs

Use the following steps:

  1. Specify the affinity to logical networks.

    • in VMM console click Fabric > Network Service > Network Controller > Properties > Logical Network Affinity page.
    • Specify the Front-end and Back-end networks available for load balancing and click OK.

      affinity

  2. Create a VIP template.

    • In the VMM console click Fabric > Create VIP Template.
    • In the Load Balancer VIP Template Wizard > Name, specify the template name and description.

      • In Virtual IP port, specify the port that will be used for the type of network traffic you want to balance.
      • In Backend port, specify the port on which the backend server is listening for requests.

        template properties

    • In Type , specify a template type, click Specific. Select Microsoft for Manufacturer. Select Microsoft network controller for Model. Click Next.

      template type

    • In Protocol, specify protocol options. Click Next.

      protocol

    • In Load Balancing method, select the method and click Next.

      load balancing method

    • In Health Monitors, you can optionally specify that a verification should run against the load balancer at regular intervals. To add a health monitor, specify the protocol and the request. For example, entering the command GET makes an HTTP GET request for the home page of the load balancer and checks for a header response. You can also modify the response type, and monitoring interval, timeout, and retries. Note that the timeout should be less than the interval.

      load balancing method

      • In Summary , confirm the Settings and click Finish to create the VIP template.
  3. Configure SLB VIP while deploying Service

    • If the service template isn't open, click Library > Templates > Service Templates and open it.
    • Click Actions > Open Designer.
    • In the Service Template Designer, click the Service Template Components group > Add Load Balancer.
    • Click the load balancer object. You'll identify it with the VIP template name.
    • Click Tool > Connector. Click the Server connection associated with template and then click a NIC object to connect the load balancer to the adapter. In the NIC properties, check the address types and that the MAC address is static.

      Note

      Server connection must be connected to the Back-End network interface of the service. The back-end network interface can be connected to either a One Connected VM Network or a network virtualized VM Network.

    • With the Connector enabled, click the client connection associated with the load balancer and then click a logical network object.

      Note

      Client connection must be connected to a Front-End network of the load balancer. This can be a Public VM network or a network virtualized VM network. A network virtualized VM Network is used for internal load balancing scenarios.

    • Save the service template in Service Template > Save and Validate.

Example 1: Configuring Service with ‘Public’ VM Network as front end. Here the ‘Backend’ network can be One connected or network virtualized VM network.

slb vip example 1

Example 2: Configuring Service with Front-end and Back-end connected to network virtualized VM Network ‘HNV VM Network’. This scenario is used for Internal load balancing.

slb vip example 2

Set up the VIP for user access

When the service is deployed, VMM automatically selects a VIP from the reserved range in the static IP address pool, and assigns it to the load-balanced service tier. To enable users to connect to the service, after the service is deployed you need to determine the VIP and configure a DNS entry for it.

  1. After the service is deployed click Fabric > Networking > Load Balancers.
  2. Click Show > Service > Load Balancer Information for Services and expand the service to see which VIP is assigned.
  3. If users use the DNS name to access the service, request that the DNS administrator manually create a DNS entry for the VIP. The entry should be the name that users will specify to connect to the service. For example, servicename.contosol.com.