Amer Networks SS3GR24i - Manual (Page 91)

SS3GR24i/SS3GR48i Layer3 Stackable Gigabit Switch User’s Guide
The page displays the port number and Switch ID under the Port
Column. The VLANs column displays the VLAN IDs that the port
is associated with. Clicking the Modify link brings up the
Create/Modify 802.1Q Trunk Page.
IGMP Snooping
IGMP (Internet Group Management Protocol) provides a method
for intelligent forwarding of multicast packets within a Layer 2
broadcast domain. By snooping IGMP registration information, a
distribution list of workstations is formed that determines which
end-stations will receive packets with a specific multicast address.
It checks IGMP packets passing through it, picks out the group
registration information, and configures multicasting accordingly.
Without IGMP snooping, multicast traffic is treated in the same
manner as broadcast traffic, that is, it is forwarded to all
ports. With IGMP snooping, multicast traffic of a group is only
forwarded to ports that have members of that group. IGMP
Snooping generates no additional network traffic, allowing you to
significantly reduce multicast traffic passing through your switch.
IGMP Snooping Config
IGMP Snooping Configuration Menu
To Configure IGMP Snooping click the IGMP Snooping Folder and
then the IGMP Snooping Config. Subfolder and then select the
IGMP Snooping Configuration Menu Page.
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