IGMP Snooping
This switch uses IGMP (Internet Group Management Protocol) to query for any attached hosts that want to receive a specific multicast service. It identifies the ports containing hosts requesting to join the service and sends data out to those ports only. It then propagates the service request up to any neighboring multicast switch/router to ensure that it will continue to receive the multicast service. This procedure is called multicast filtering.
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).
Choose enable or disable from the IGMP
Snooping Mode drop down menu.
Configuring VLANs | 51 |
Figure 34 IGMP Snooping Setup Screen
IGMP Query
Choose enable or disable from the IGMP Query Mode drop down menu.
Figure 35 IGMP Query Setup Screen
Broadcast Storm
Use the Broadcast Storm page to set the Switch’s broadcast storm control and threshold limits.
