User's Manual

Wireless Array
Configuring the Wireless Array 293
select it in the list and click Delete. To remove all entries from the list,
click Reset.
22. Multicast VLAN Forwarding: This is a list of VLANs that participate in
the multicast forwarding. Please see the description of multicast
forwarding in Step 21 above.
To add a new VLAN to the list, enter its number or name in the top field
and click the Add button to its right. You may enter multiple VLANs at
once, separated by a space. To remove an entry, select it in the list and
click Delete. To remove all entries from the list, click Reset.
These VLANs must be trunked to the Array from the LAN switch, and be
defined on the Array. See “VLAN Management” on page 201 and “SSID
Management” on page 253.
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The VLANs you enter must be explicitly defined (see “VLANs” on
page 199) in order to participate in multicast forwarding. In fact, the Array
discards packets from undefined VLANs.
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Note that Multicast Forwarding and mDNS Filtering capabilities also work
if both devices are wireless. For example, let’s say that AppleTV is using
wireless to connect to an SSID that is associated with VLAN 56, and the
wireless client is on an SSID that is associated with VLAN 58. Normally the
wireless client would not be able to use Bonjour to discover the AppleTV
because they are on separate VLANs. But if you add 224.0.0.251 to the
Multicast Forwarding Addresses, then add VLANs 56 and 58 to the
Multicast VLAN Forwarding list, then the wireless client will be able to
discover the AppleTV. In this same scenario you could add AppleTV to the
MDNS Filter list so that only MDNS packets for the AppleTV service type
would be forwarded between VLANs 56 and 58.
Note that all the VLANs that you add to this list do not have to be associated
with SSIDs. As an example, say that AppleTV is on the wired network on
VLAN 56, while the wireless device is connected to an SSID that is
associated to VLAN 58. In this case, VLAN 56 and 58 need to be defined on
the Array but only VLAN 58 needs to be associated to a SSID.