Filter
Top Products
152
SONICWALL SONICOS ENHANCED 2.5 ADMINISTRATOR’S GUIDE
C
HAPTER
27:
Configuring Multicast Settings
Multicast Snooping
This section provides configuration tasks for Multicast Snooping.
• Enable Multicast - This checkbox is disabled by default. Select this checkbox to support multicast
traffic.
• Require IGMP Membership reports for multicast data forwarding - This checkbox is enabled
by default. Select this checkbox to improve performance by regulating multicast 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 5 to 60 (minutes). Update the default timer value of 5 in the following conditions:
You suspect membership queries or reports are being lost on the network.
You want to reduce the IGMP traffic on the network and currently have a large number of
multicast groups or clients. This is a condition where you do not have a router to route traffic.
You want to synchronize the timing with an IGMP router.
Multicast Policies
This section provides configuration tasks for Multicast Policies.
• Enable reception of all multicast addresses - This radio button is not enabled by default. Select
this radio button to receive all (class D) multicast addresses. Receiving all multicast addresses
may cause your network to experience performance degradation.
• Enable reception for the following multicast addresses - This radio button is enabled by
default. In the pull-down menu, select Create a new multicast object or Create new multicast
group.
IGMP State Table
This section provides descriptions of the fields in the IGMP State table.
• 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 amount of time left before the IGMP entry will be flushed. This is
calculated by subtracting the “Multicast state table entry timeout (minutes)” value, which has
the default value of 5 minutes, and the elapsed time since the multicast address was added.