Skip to content

Page permalink

Always use the following permalink when referencing this page. It will remain unchanged in future help versions.

https://docs.sophos.com/central/customer/help/en-us/index.html?contextId=switch-management-MLD-snooping

MLD snooping

Multicast listener discovery (MLD) snooping performs a similar function for IPv6 as IGMP snooping does for IPv4. With MLD snooping turned on, the switch creates a list of ports that receive multicast data. The switch then only forwards this data to those ports, which avoids flooding all ports on the VLAN.

Settings

To configure MLD snooping, do as follows:

  1. Go to Switches, select the switch you want to configure, then select L3 protocols.
  2. Select MLD snooping.
  3. Select Settings.

  4. Select the status for MLD snooping either globally or per VLAN. The options are as follows:

    Option Description
    Not set MLD snooping isn't configured.
    Enabled Turn on MLD snooping.
    Disabled Turn off MLD snooping.

Group list

The Group list tab shows the list of discovered multicast groups. These groups of computers or devices receive the same network traffic.