MLDv1 with MLDv2

MLD snooping can be configured as MLDv1 or MLDv2 on individual ports on a VLAN. An interface or router sends queries and reports that include the MLD version with which it has been configured. The version configuration applies only to the sending of queries. If the lower version is configured, higher version reports cannot be processed. However, if the higher version is configured lower versions can also be processed.

Note: To avoid version deadlock, when an interface receives a report with a lower version than that for which it has been configured, the interface does not automatically downgrade the running MLD version.