15.2.8 Notes on using IGMP
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When static group joining is set due to a configuration change, as many as 125 seconds might be needed to create a (*,G) entry for a PIM-SM group, or a (S,G) entry for a PIM-SSM group.
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When an IGMPv3 Report with a sender specified is received for a group for which the SSM address set in the configuration is out of range, multicast packets for all senders are forwarded.