Handling MLD Reports

MLD Mapping captures the enhanced functionality.

Table 1. MLD Mapping
MLDv1 Join MLD SSM Map Disabled MLD SSM Map Enabled
Group in SSM range but no map entries Dropped Dropped
Group in SSM range with map entries Dropped SSM map sources included
Group not in SSM range SSM map sources not included SSM map sources not included

MLDv1 reduction messages in the SSM range are accepted and processed normally. Multicast manager will send out a group-specific query and refresh the receivers on receiving joins.

When an MLDv2 report is received, following group records types are ignored if they refer to SSM group range:

Other group records in the same report are processed.