Niveo Professional NGS16TP - Manual (Page 113)

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NIVEO PROFESSIONAL Gigabit Management Switch
User's Manual
6.4.9 IGMP
This switch supports IGMP Snooping function for IP Multicast traffic. Switch will learn IP
Multicast Groups from IGMP protocol packets. Here is for IGMP function configuration
settings.
1). IGMP Configuration
IGMP Status: this is used to enable/disable IGMP function.
IGMP Querying: this is used to enable/disable IGMP Query function. This switch will send
IGMP Query at a fixed interval if it is enable. The IGMP query responses, known as IGMP
reports (which look very much like an IGMP join) keep the switch updated with the
current multicast group membership on a port-by-port basis.
Unregistered IPMC Flooding: unregistered (un-joined) IP multicast traffic will be flooded
to every port if this setting is enable. If it is disable, the unregistered IP multicast traffic
will be flooded to IP multicast members only
IGMP Query Interval: this is used to set the IGMP query packet sending interval if IGMP
Query function is enable.
IGMP Report Delay: this is used to set the delay time to send report after receiving a
query. When a host receives a Query, it doesn’t send a report immediately but it starts a
report delay timer for each group membership on the network interface of the incoming
Query. When the timer expires, a report is generated for the corresponding host group.
IGMP Query Timeout: this is used to set the timeout interval for IGMP Query operation.
If the switch does not receive updated membership information in a timely fashion, it will
stop forwarding multicasts to the delinquent port where the end-device is located.
[Router Port]
This is used to select the port that connected to IGMP active router.
2). IP Multicast Registration Table