Multicast Filtering

A mechanism that supports multicast traffic can be enabled as part of a topology definition. This mechanism is provided to support the demands of VoIP and IPTV network traffic, while still providing the network access control.

Note

Note

To use the mobility feature with this topology, you must select the Enable Multicast Support checkbox for the data port.

Define a list of multicast groups whose traffic is allowed to be forwarded to and from the VNS using this topology. The default behavior is to drop the packets. For each group defined, you can enable Multicast Replication by group.

Note

Note

Before enabling multicast filters and depending on the topology, you may need to define which physical interface to use for multicast relay. Define the multicast port on the IP Addresses tab. For more information, see Setting Up the Data Ports.

To enable Multicast for a topology:

  1. On the Topologies page, click the Multicast Filters tab.
    Click to expand in new window
    Topology Multicast Filters
    Graphics/multicast.png
  2. To enable the multicast function, select Multicast bridging.
  3. Define the multicast groups by selecting one of the radio buttons:
    • IP Group — Type the IP address range.
    • Defined groups — Click from the drop-down list.
    Note

    Note

    IPv6 traffic is supported for B@AC and B@AP topologies.
  4. To enable the wireless multicast replication for this group, select the corresponding Wireless Replication checkbox. Wireless Replication filters multicast traffic being sent back to the wireless AP channel or wired network.
    Note

    Note

    Wireless replication takes effect only when Multicast Address is allowed.
  5. Click Add. The group is added to the list above.
  6. To modify the priority of the multicast groups, click the group row, and then click the Up or Down buttons.

    A Deny All rule is automatically added as the last rule, IP = *.*.*.* and the Wireless Replication checkbox is not selected. This rule ensures that all other traffic is dropped.

  7. To save your changes, click Save.
    Note

    Note

    The multicast packet size should not exceed 1450 bytes.