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IGMP Snooping V1 & V2
A switch will, by default, flood multicast traffic to all ports in a broadcast domain. Multicast can
cause unnecessary load on host devices by requiring them to process packets they have not
solicited. The IGMP snooping is a feature that allows the switch to listen in on the IGMP
conversation between hosts and routers. By listening (also known as snooping) to these
conversations, the switch maintains a map of which ports (clients) need which multicast
stream (source). Multicast may be filtered which do not need them, Multicast may be
forwarded only to the IGMP group it joined.
IGMP Snooping
When this function is enabled, the switch will execute IGMP snooping version 1 and version 2
without the intervention of CPU. The IGMP report and leave packets are automatically
handled by the switch. The next setting, IGMP Leave Packet can be enabled or disabled.
After enabled, the Leave packet will be forwarded to IGMP router ports.
VLAN Uplink Setting
This switch does not implement Independent VLAN (IVL) MAC address table, it utilizes VLAN
uplink to emulate the function of IVL. An independent VLAN MAC address table is based on
both the source MAC address and the VLAN. In some application, if the Ethernet switch
cannot build the separate MAC address table for different VLANs, there will be a conflict of
MAC address table. To solve this problem, the switch controller utilizes the VLAN Uplink port
to emulate the usage of Independent VLAN MAC Address Table.
VLAN Uplink Setting
If VLAN uplink function is enabled and the destination port of an unicast packet is located at
the next VLAN, this packet will be forwarded to the uplink port. Choose the Uplink Port X for
the port ID. The Uplink X will be the uplink port of its VLAN.
Button
Update:
Apply all the settings you’ve made here.