System information

Chapter 4: Configuring Switching Information | 127
GS752TXS Smart Switch Software Administration Manual
• Disable. The IGMP IP header is not checked for Router Alert option.
3. Choose whether to block unknown multicast addresses.
• Enable. Packets with unknown multicast MAC address in the destination field will be
dropped.
• Disable. Packets with unknown destination multicast MAC addresses are processed.
4. Click Apply to send the updated configuration to the switch. Configuration changes take
effect immediately.
5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch
The following table displays information about the global IGMP snooping status and statistics
on the page.
Field Description
Multicast Control Frame
Count
Displays the number of multicast control frames that have been processed
by the CPU.
Interfaces Enabled for IGMP
Snooping
Lists the interfaces currently enabled for IGMP Snooping. To enable
interfaces for IGMP snooping, see IGMP Snooping Interface Configuration
on page 127.
Data Frames Forwarded by
the CPU
Displays the number of data frames forwarded by the CPU.
VLAN Ids Enabled For IGMP
Snooping
Displays VLAN IDs enabled for IGMP snooping. To enable VLANs for IGMP
snooping, see IGMP Snooping VLAN Configuration on page 132.
VLAN Ids Enabled For IGMP
Snooping Querier
Displays VLAN IDs enabled for IGMP snooping querier.
IGMP Snooping Interface Configuration
Use the IGMP Snooping Interface Configuration page to configure IGMP snooping settings
on specific interfaces.
To access the IGMP Snooping Interface Configuration page, click Switching Multicast 
IGMP Snooping
 IGMP Snooping Interface Configuration.