MLD Mapping captures the enhanced functionality.
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.
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