Igmp Snooping - Siemens SCALANCE XM-400 Configuration Manual

Configuring with Web Based Management
5.5 The "Layer 2" menu
5.5.17.2

IGMP snooping

Function
IE switches support "IGMP snooping" and the IGMP querier function. If "IGMP snooping" is
enabled, IGMP frames are evaluated and the multicast filter table is updated with this
information. If "IGMP Querier is also enabled, IE switches also send IGMP queries that trigger
responses from IGMP-compliant nodes.
IGMP Snooping Aging Time
In this menu, you can configure the aging time for IGMP Configuration. When the time elapses,
entries created by IGMP are deleted from the address table if they are not updated by a new
IGMP frame.
This applies to all ports; a port-specific configuration is not possible.
IGMP Snooping Aging Time depending on the querier
SCALANCE XR500 as IGMP querier
If a SCALANCE XR500 is used as an IGMP querier, the query interval is 125 seconds. For
the "IGMP Snooping Aging Time", set at least 250 seconds.
Other IGMP queriers
If a different IGMP querier is used, the value of the "IGMP Snooping Aging Time" should be
at least twice as long as the query interval.
Description of the displayed boxes
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SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12