MicroNet Technology SP3508A - Manual (Page 25)

Parameter Description
Active The port automatically sends LACP protocol packets.
Passive The port does not automatically sends LACP protocol packets, and
responds only if it receives LACP protocol packets from the opposite
device.
5.8 Filter Database
The Internet Group Management Protocol (IGMP) is an internal protocol of
the Internet Protocol (IP) suite. IP manages multicast traffic by using VDSL
Switch, routers, and hosts that support IGMP. Enabling IGMP allows the ports
to detect IGMP queries and report packets and manage IP multicast traffic
through the switch. The SP3508A supports IP multicast, users can enable
IGMP protocol on the following interface. The IGMP snooping information will
also be displayed on interface. User can view different multicast group, VID
and member port in the following interface. IP multicast addresses range from
224.0.0.0 through 239.255.255.255.
5.8.1 IGMP Snooping
IGMP have three fundamental types of message as follows:
1. Query: A message sent from the queries (IGMP router or SP3508A)
asking for a response from each host belonging to the multicast group.
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