D-Link DES-3226 Reference Manual - Page 201
config igmp_snooping querier
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DES-3226S Layer 2 Fast Ethernet Switch User's Guide config igmp_snooping querier message intervals: • Group member interval-Amount of time that must pass before a multicast router decides there are no more members of a group on a network. This interval is calculated as follows: (robustness variable x query interval) + (1 x query response interval). • Other querier present interval- Amount of time that must pass before a multicast router decides that there is no longer another multicast router that is the querier. This interval is calculated as follows: (robustness variable x query interval) + (0.5 x query response interval). • Last member query count-Number of group-specific queries sent before the router assumes there are no local members of a group. The default number is the value of the robustness variable. • By default, the robustness variable is set to 2. You might want to increase this value if you expect a subnet to be lossy. last_member_query_interval − The maximum amount of time between groupspecific query messages, including those sent IGMP Snooping Commands 201