SGSW-24x Series User Manual

Table Of Contents
User’s Manual of SGSW-24040 / 24240 Series
screen in Figure 4-8-7 appears.
Figure 4-8-7 IGMP Snooping VLAN Configuration page screenshot
The page includes the following fields:
Object Description
T
he VLAN ID of the entry.
VLAN ID
IGMP Snooping Enable
Enable the per-VLAN IGMP Snooping. Only up to 64 VLANs can be selected.
Enab
le the IGMP Querier in the VLAN. The Querier will send out if no Querier
received in 255 seconds after IGMP Querier Enabled. Each Querier's interval is
125 second, and it will stop act as an IGMP Querier if received any Querier from
other devices.
IGMP Querier
Buttons
: Refreshes the displayed table starting from the "VLAN" input fields.
: Updates the table starting from the first entry in the VLAN Table, i.e. the entry with the lowest VLAN ID.
: Updates the table, starting with the entry after the last entry currently displayed.
: Click to save changes.
: Click to undo any changes made locally and revert to previously saved values.
4.8.5 Port Group Filtering
In certain switch applications, the administrator may want to control the multicast services that are available to end users. For
example, an IP/TV service is based on a specific subscription plan. The IGMP filtering feature fulfills this requirement by
restricting access to specified multicast services on a switch port, and IGMP throttling limits the number of simultaneous
multicast groups a port can join.
IGMP filtering enables you to assign a profile to a switch port that specifies multicast groups that are permitted or denied on the
port. An IGMP filter profile can contain one or more, or a range of multicast addresses; but only one profile can be assigned to a
port. When enabled, IGMP join reports received on the port are checked against the filter profile. If a requested multicast group
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