Igmp; Igmp Snooping - D-Link xStack DES-3800 Series User Manual

From/To
Mode
After setting the previous parameters, click Apply to allow your changes to be implemented. The
LACP Port Table shows which ports are active and/or passive.

IGMP

Internet Group Management Protocol (IGMP) snooping allows the Switch to recognize IGMP queries
and reports sent between network stations or devices and an IGMP host. When enabled for IGMP
snooping, the Switch can open or close a port to a specific device based on IGMP messages passing
through the Switch.
In order to use IGMP Snooping it must first be enabled for the entire Switch (see Advanced Settings).
You may then fine-tune the settings for each VLAN using the IGMP Snooping link in the
Configuration folder. When enabled for IGMP snooping, the Switch can open or close a port to a
specific multicast group member based on IGMP messages sent from the device to the IGMP host or
vice versa. The Switch monitors IGMP messages and discontinues forwarding multicast packets when
there are no longer hosts requesting that they continue.

IGMP Snooping

To view the IGMP Snooping Settings window, click Use the Current IGMP Snooping Group
Entries window to view IGMP Snooping settings. To modify the settings, click the Modify button of
the VLAN ID you want to change.
Clicking the Modify button will open the IGMP Snooping Settings window, shown below:
xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
A consecutive group of ports may be configured starting with the selected port.
Active - Active LACP ports are capable of processing and sending LACP control
frames. This allows LACP compliant devices to negotiate the aggregated link so the
group may be changed dynamically as needs require. In order to utilize the ability to
change an aggregated port group, that is, to add or subtract ports from the group, at
least one of the participating devices must designate LACP ports as active. Both
devices must support LACP.
Passive - LACP ports that are designated as passive cannot initially send LACP
control frames. In order to allow the linked port group to negotiate adjustments and
make changes dynamically, one end of the connection must have "active" LACP
ports (see above).
Figure 7- 14. Current IGMP Snooping Group Entries window
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