112 | Chapter 3: Configuring Switching Information
FS728TP Smart Switch Software Administration Manual
Enter a value between 0 and 3600 seconds. The default is 0 seconds, which means
there is no expiration.
• Query Mode. Enable or disable the IGMP Querier Mode for the specified VLAN ID.
• Query Interval. Enter the value for IGMP Query Interval for the specified VLAN ID.
The valid range is 1–1800 seconds. The default is 60 seconds.
2. Click Add to enable IGMP snooping on the VLAN specified in the VLAN ID field.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
4. To disable IGMP snooping on a VLAN and remove it from the list, select the check box next
to the VLAN ID and click Delete.
5. To modify IGMP snooping settings for a VLAN, select the check box next to the VLAN ID,
update the desired values, and click Apply.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
IGMP Snooping Querier
IGMP snooping requires that one central switch or router periodically query all end-devices
on the network to announce their multicast memberships. This central device is the IGMP
querier. The IGMP query responses, known as IGMP reports, keep the switch updated with
the current multicast group membership on a port-by-port basis. If the switch does not
receive updated membership information in a timely fashion, it will stop forwarding multicasts
to the port where the end device is located.
These pages enable you to configure and display information on IGMP snooping queriers on
the network and, separately, on VLANs.
The IGMP Snooping Querier feature contains links to the following pages:
• IGMP Snooping Querier Configuration on page 112
• IGMP Snooping Querier VLAN Configuration on page 113
• IGMP Snooping Querier VLAN Status on page 114
IGMP Snooping Querier Configuration
Use this page to enable or disable the IGMP Snooping Querier feature, specify the IP
address of the router to perform the querying, and configure the related parameters.
To access this page, click Switching Multicast IGMP Snooping Querier IGMP
Snooping Querier Configuration.
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