Matter Survey

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Clusters » Groupcast » Matter master

Groupcast 0x0065

Matter master
ClusterRevision 1
The Groupcast cluster manages the content of the node-wide multicast Group membership that is part of the underlying interaction layer.
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Spec History

Matter 1.5 rev 1 Matter 1.6 rev 1 Matter master rev 1

Attributes (5)

Code Name Type
0x0000 Membership array
0x0001 MaxMembershipCount int16u
0x0002 MaxMcastAddrCount int16u
0x0003 UsedMcastAddrCount int16u
0x0004 FabricUnderTest fabric_idx

Commands (6)

Code Name Direction
0x00 JoinGroup client→server
0x01 LeaveGroup client→server
0x02 LeaveGroupResponse server→client
0x03 UpdateGroupKey client→server
0x04 ConfigureAuxiliaryACL client→server
0x05 GroupcastTesting client→server

Features (3)

Bit Code Name
0 LN Listener — Supports joining a multicast group of nodes as a listener
1 SD Sender — Supports sending multicast message to a targeted group of nodes
2 PGA PerGroup — Supports PerGroup multicast addresses