Configuring Multicast Settings

To configure multicast settings, complete the following steps:

1	Select the global icon, a group, or a SonicWALL appliance. At unit level, the Multicast screen is available only for SonicWALL firewall appliances with SonicOS Enhanced firmware version 2.5 and higher.

2	Expand the Firewall tree and click Multicast.

The Multicast page displays.

3	To enable multicast, select Enable Multicast.

4	Configure the following options:

•	Require IGMP Membership reports for multicast data forwarding—This check box is enabled by default. Select this check box to improve performance by regulating muliticast data to be forwarded to only interfaces belonging to an enabled multicast group address.

•	Multicast state table entry timeout (minutes)—This field has a default of 5. The value range for this field is five to 60 (minutes). Increase the value if you have a client that is not sending reports periodically.

5	Select from the following:

•	To receive all (class D) multicast addresses, select Enable reception of all multicast addresses. Receiving all multicast addresses might cause your network to experience performance degradation.

•	Default. To enable reception for the following multicast addresses, select Enable reception for the following multicast addresses and select Create a new multicast object or Create new multicast group from the list box.

6	To view the IGMP State Information, click Request IGMP State Information. The following information displays:

•	Multicast Group Address—Provides the multicast group address the interface is joined to.

•	Interface / VPN Tunnel—Provides the interface (such as X0) or the VPN policy.

•	IGMP Version—Provides the IGMP version (such as V2 or V3).

•	Time Remaining—Provides the remaining time left for the multicast session. This is calculated by subtracting the “Multicast state table entry timeout (minutes)” value that has the default value of five minutes, and the elapsed time since the multicast address was added.

7	When you are finished, click Update. The settings are changed for each selected SonicWALL appliance. To clear all screen settings and start over, click Reset.