Milan Technology MIL-SME801GSX - Manual (Page 110)

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3. The following topology must be set when the IP address of the switch is not
the smallest in the subnet. The network will cause a multi-cast storm from the
IGMP client report if it is in Auto mode. All switches must be in disable mode
when the VOD server is configured for IGMP Querier.
Note: It is suggested that the VOD server switch have the smallest IP
address.