10.3 Multicast Filtering Profile
ICMP (Internet Control Message Protocol) generates error response, diagnostic, or routing messages.
ICMP messages generally contain information about routing difficulties or simple exchanges such as
time-stamp or echo transactions.
IGMP Snooping is used to establish the multicast groups to forward the multicast packet to the
member ports. It avoids wasting the bandwidth when IP multicast packets are running over the network.
A switch that does not support IGMP or IGMP Snooping cannot tell the multicast packet from the
broadcast packet, so it can only treat them all as broadcast packets. Without IGMP Snooping, the
multicast packet forwarding function is inactive and all packets are treated as broadcast packets.
A switch that supports IGMP Snooping can query, report, and leave a packet exchanged between an
IP Multicast Router/Switch and an IP Multicast Host, and can update the information of the Multicast
table when a member (port) joins or leaves an IP Multicast Destination Address. With this function,
once a switch receives an IP multicast packet, it will forward the packet to the members who joined in a
specified IP multicast group previously.
The packets will be discarded by IGMP Snooping if the user transmits multicast packets to the
multicast group that was not built up in advance. IGMP mode enables the switch to issue IGMP
function that you enable IGMP proxy or snooping on the switch, which connects to a router closer to
the root of the tree. This interface is the upstream interface. The router on the upstream interface
should be running IGMP.
10.3-1 Switch > Multicast > Multicast Filtering Profile > Filtering Profile Table
IPMC Profile Global Setting parameters:
Global Profile Enable: Select Disabled or Enabled. The default is Disabled.
IPMC Profile Table Setting parameters:
Delete: Click to delete the entry. The designated entry will be deleted during the next apply.
Profile Name: Enter a name for the new IPMC profile. Avoid spaces between characters.
Profile Description: Enter a description of the new IPMC profile.
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