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How to Configure Global Network Settings in VMM

Updated: November 1, 2013

Applies To: System Center 2012 - Virtual Machine Manager, System Center 2012 R2 Virtual Machine Manager, System Center 2012 SP1 - Virtual Machine Manager

You can use the following procedure to configure global networking settings in Virtual Machine Manager (VMM). With these optional settings, you can configure the automatic creation of logical networks, the automatic association of a host’s physical network adapter with a logical network, and the automatic creation of external virtual networks on host network adapters.

The labels in the dialog box described in this procedure vary slightly among System Center 2012, System Center 2012 Service Pack 1 (SP1), and System Center 2012 R2. These differences are noted in the table that follows.

noteNote
This procedure is optional. Change these settings only if you want to modify the default behavior. For more information about the default behavior, see “Assigning logical networks to hosts” in Configuring Logical Networking in VMM Overview.

Account requirements   To complete this procedure, you must be a member of the Administrator user role.

How to configure global networking settings

  1. Open the Settings workspace.

  2. In the Settings pane, click General.

  3. In the results pane, double-click Network Settings.

  4. Configure any of the following settings:

     

    Area Settings

    Logical network matching

    You can configure how VMM determines the logical network name to use when the automatic creation of logical networks is enabled. The following options are available.

    noteNote
    This setting is only applied when you add a host to VMM management and there is no logical network associated with a physical network adapter on the host. Changes to this setting do not affect hosts that are already under management. Also, for VMware ESX and Citrix XenServer hosts, the options of First DNS Suffix Label and DNS Suffix are not supported. Therefore, by default, ESX and XenServer hosts use the Virtual Network Switch Name option.

    • First DNS Suffix Label (the default)

      The first suffix label of the connection-specific DNS suffix. For example, if the DNS suffix is corp.contoso.com, VMM creates a logical network that is named “corp”.

    • DNS Suffix

      The full connection-specific DNS suffix. For example, if the DNS suffix is corp.contoso.com, VMM creates a logical network that is named “corp.contoso.com”.

    • Network Connection Name

      The network connection name. For example, if the network connection is named Local Area Connection 2, VMM creates a logical network that is named “Local Area Connection 2”.

    • Virtual Network Switch Name

      The name of the virtual network switch to which the physical network adapter of the host is bound.

    • Disabled

    You can also specify the option to use if the first logical network matching selection fails. You can select one of the following options:

    • Virtual Network Switch Name (default)

    • Network Connection Name

    • Disabled

    Automatic creation of logical networks

    By default, the Create logical networks automatically setting is enabled. If there is no logical network associated with a physical network adapter on the host, VMM automatically creates and associates a logical network based on the logical network matching selection. By default, this is the first DNS suffix label of the connection-specific DNS suffix. In System Center 2012 SP1 and System Center 2012 R2, on the logical network, VMM also creates a VM network configured with “no isolation.”

    noteNote
    This setting is only applied when you add a host to VMM management and there is no logical network associated with a physical network adapter on the host. Changes to this setting do not affect hosts that are already under management.

    In System Center 2012: Automatic creation of virtual networks

    In System Center 2012, by default, the Create virtual networks automatically setting is enabled. If the host has a physical network adapter with an associated logical network, but no virtual networks attached, VMM automatically creates an external virtual network when VMM connects a virtual machine to a logical network that is associated with the physical network adapter. For example, VMM creates an external virtual network automatically when you create a virtual machine, migrate a virtual machine, or modify a virtual machine that uses the logical network that is associated with the physical network adapter.

    noteNote
    This setting only applies to Hyper-V hosts.

    In System Center 2012 SP1: Automatic creation of virtual switches

    In System Center 2012 SP1, there is a setting labeled Create virtual switches automatically. However, selecting or clearing this check box has no effect. Virtual switches are not created automatically by VMM in System Center 2012 SP1.

See Also

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For additional resources, see Information and Support for System Center 2012.

Tip: Use this query to find online documentation in the TechNet Library for System Center 2012. For instructions and examples, see Search the System Center 2012 Documentation Library.
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