Multicast; Igmp Snooping - Emerson PACSystems SLM080 User Manual

PACSystems Ethernet Switch SLM080 User Manual
GFK-3125A
5.2.7

Multicast

5.2.7.1

IGMP Snooping

Internet Group Management Protocol (IGMP) is used by IP hosts to register their dynamic
multicast group membership. IGMP has 3 versions, IGMP v1, v2 and v3. Please refer to RFC
1112, 2236 and 3376. IGMP Snooping improves the performance of networks that carry
multicast traffic. It provides the ability to prune multicast traffic so that it travels only to those
end destinations that require that traffic and reduces the amount of traffic on the Ethernet LAN.
Figure 38: IGMP Snooping
The following table describes the labels in this screen.
Label
IGMP Snooping Table
IGMP Protocol
IGMP Query
Apply
Help
Web Management
Description
Show current IP multicast list
Enable/Disable IGMP snooping.
Switch will be IGMP querier or not . There should exist one and
only one IGMP querier in an IGMP application. The "Auto" mode
means that the querier is the one with lower IP address.
Click " Apply " to set the configurations.
Show help file.
Section 5
Jan 2020
52