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GroupAddress
The multicast group IP address for this static source-group entry.
SourceAddress
The multicast source IP address for this static source-group entry.
SrcSubnetMask
The source's subnet mask for this static source-group entry.
The static source group feature works for both specific source addresses and subnet addresses. This is achieved by using the Subnet Mask field. When the Network Mask is configured as 255.255.255.255, the full source address is used to match the (S,G) which is the specific source case. When the network mask field is configured as a subnet mask for the source, only the source subnet is used to match (S,G)s. The first entry in Figure 1 shows a subnet configuration and the second entry shows a source specific configuration.