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Creating and Managing an mDNS VLAN List

 

mDNS provides a general method for Apple devices to set up a network without any configuration. You should limit the use of mDNS to specific VLANs to prevent interference with the rest of the network. By default, a list of VLANs is determined by the cache entries returned by the controller and by the sessions on the network looking for a particular type of service. You can optionally specify a list of VLANs to limit access to certain resources. For example, by placing Apple TV (_airplay service) on a separate VLAN and Internet Printer (_ipp service) on another VLAN, you can limit those bandwidth-hungry services.

This topic describes:

Managing an mDNS VLAN List

From the Manage mDNS VLAN List page, you can:

  • Create a new wireless mDNS VLAN List by clicking Add. For directions, see Creating an mDNS VLAN List.

  • Modify an existing mDNS VLAN List by selecting it and clicking Edit.

  • View information about an mDNS VLAN List, including the interfaces it is associated with, by clicking the profile name or by selecting the profile and clicking Details.

  • Delete an mDNS VLAN List by selecting a profile and clicking Delete.

    Tip

    You cannot delete profiles that are in use—that is, assigned to objects or used by other profiles. To see the current assignments for an mDNS VLAN List, select the mDNS VLAN List and click Details.

  • Clone a VLAN list by selecting a profile and clicking Clone.

Creating an mDNS VLAN List

Create an mDNS VLAN list to limit access to certain mDNS resources. A VLAN list works with an mDNS Profile, limiting mDNS applications to specified VLANs. Also see Creating and Managing mDNS Profiles.

To create an mDNS VLAN list:

  1. Under Views, select one of these options: Logical View, Location View, Device View or Custom Group View.Tip

    Do not select Dashboard View, Datacenter View, or Topology View.

  2. Click in the Network Director banner.
  3. In the Tasks pane, expand Wireless, expand Profiles, and then click mDNS Profile.

    The Manage mDNS Profile page appears, displaying a list of currently configured mDNS Profiles and their attributes.

  4. Click Add.

    The Create VLAN List page appears.

  5. Specify the settings as described in both the online help and in Specifying mDNS VLAN Members.
  6. Click Done to save the Authorization profile.

    The system saves the Authorization profile and displays the Manage Authorization Profiles page. Your new or modified Authorization profile is listed in the table of Authorization profiles.

Specifying mDNS VLAN Members

mDNS services such as Apple TV, Internet printer, or Digital Auto Access Protocol (iTunes) can consume extensive resources. To limit use of mDNS services to named VLANs:

  1. Provide a name and description for the mDNS VLAN List.
  2. Select existing VLANs to add to the list:

    1. Click VLAN under Select VLAN and/or VLAN Pool.

      The Select VLAN window opens, displaying a list of configured VLANs and VLAN pools.

    2. Select one or more VLANs by placing a check mark next to the name.
    3. Click OK.

      The selected VLAN pools are added to the list of VLANs and VLAN pools.

  3. Select existing VLAN pools to add to the list:

    1. Click VLAN Pool under Select VLAN and/or VLAN Pool.

      The Select VLAN Pool window opens, displaying a list of configured VLAN Pools.

    2. Select one or more VLAN pools by placing a check mark next to the name.
    3. Click OK.

      The selected VLAN pools are added to the list of VLANs and VLAN pools.

    4. Click Done.