D-Link DGS-3630-52PC Manual - Page 717
ip igmp ssm-map enable
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DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide Command Mode Interface Configuration Mode. Command Default Level Level: 12. Usage Guideline The robustness variable provides fine tuning to allow for expected packet loss on an interface. The value of the robustness variable is used in calculating the following IGMP message intervals: • Group member interval - The 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 - The 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 - The 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. Example This example shows how to configure the robustness variable to be 3 on interface VLAN 1000. Switch# configure terminal Switch(config)# interface vlan1000 Switch(config-if)# ip igmp robustness-variable 3 Switch(config-if)# 51-8 ip igmp ssm-map enable This command is used to enable the SSM mapping for IGMPv1 or IGMPv2 hosts. Use the no form of this command to disable the mapping. ip igmp ssm-map enable no ip igmp ssm-map enable Parameters None. Default By default, this option is disabled. Command Mode Global Configuration Mode. Command Default Level Level: 12. Usage Guideline Use this command to enable or disable SSM mapping for groups in the configured SSM range. SSM mapping is only applied to received IGMPv1 or IGMPv2 membership report packets. 712
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