How to calculate the expiry time of IGMPSNP/MVR entry on ECS4100 series ? Follow
When a group's timer expires then it will be removed from IGMPSNP group table /MVR member table, therefore, this group's multicast traffic will stop forwarding.
Once the switch received the group’s IGMP report packet, then the timer will start to calculate or renew.
IGMP snooping:
IGMPSNP Expire time = Last Member Query Count x Query Interval + Query Response Interval
For Example:
Default: 125 x 2 + 10 = 260 seconds = 4 minutes and 20 seconds
MVR:
MVR Expire time = MVR Robustness Value x MVR Proxy Query Interval + 10 seconds (static)
For Example:
Default: 125 x 2 + 10 = 260 seconds = 4 minutes and 20 seconds
Notice: Enable/Disable "MVR Proxy Switching" will not affect to expire time.
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