TRENDnet TEG-S081FMI - Manual (Page 61)

2. This topology has to be set for when the router’s IP address is not smaller
than other Switch in subnet.
Note: This Router supports IGMP protocol, but IGMP has to be in enable
mode, and the Router has to be the Queryer.
3. This topology must be set for when the Switch’s IP address is not the
smallest in the subnet. If in Auto mode, the network will cause multi-cast
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