To configure the IGMP options available in Netopia Gateways, click the IGMP link.
The IGMP page appears.
You can set the following options:
•IGMP Snooping – checking this checkbox enables the Netopia Gateway to “listen in” to IGMP traffic. The Gateway discovers multicast group membership for the purpose of restricting multicast transmissions to only those ports which have requested them. This helps to reduce overall network traffic from streaming media and other
•Robustness – a way of indicating how sensitive to lost packets the network is. IGMP can recover from robustness minus 1 lost IGMP packet. The default value is 2.
•Query Interval– the amount of time in seconds between IGMP General Query mes- sages sent by the querier gateway. The default query interval is 125 seconds.
•Query Response Interval – the maximum amount of time in tenths of a second that the IGMP router waits to receive a response to a General Query message. The default query response interval is 10 seconds and must be less than the query interval.
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