SSM binds a receiver to a specific source IP. This prevents "IGMP snooping floods" on your VLANs. Your tool must support (S,G) channels, not just (*,G).
If you stream at 100 Mbps to a switch that has a 5Mbps client port, the switch must buffer the overflow. Many access switches have tiny buffers (2MB). When the buffer overflows, the tool drops packets for all clients on that switch. Solution: Rate-limit the multicast stream to the speed of the slowest client link. multicast upgrade tool
Upgrading 2,000 VoIP phones (20MB firmware each) via unicast requires moving ~40GB of data through your core switch. A multicast upgrade moves only 20MB. In WAN scenarios (upgrading branch routers across MPLS), multicast prevents saturating expensive low-bandwidth links. SSM binds a receiver to a specific source IP