Alcatel OS-LS-6224 User Manual page 247

procedure is called multicast filtering. The IGMP Snooping Querier is used to
support IGMP snooping where the multicast traffic is not routed.
The purpose of IP multicast filtering is to optimize a switched network's
performance, so multicast packets will only be forwarded to those ports containing
multicast group hosts or multicast routers/switches, instead of flooding traffic to all
ports in the subnet (VLAN). The user can set the IGMP Querier mode to either V2 or
V3. (Default is V2). When working in IGMPv3 mode and detecting an IGMPv2
message, the switch will automatically change its mode to IGMPv2.
The IGMP Snooping Page contains parameters for configuring switches to forward
multicast traffic.
Command Attributes
Global Parameters
• IGMP Snooping Status — Indicates that the switch monitors network traffic to
determine which hosts want to receive multicast traffic.
• IGMP Snooping Version — Displays the IGMP Snooping version enabled on the
device.
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Multicast Filtering
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