Netgear M4300-24X24F (XSM4348S) - Stackable Managed Switch with 48x10G including 24x10GBASE-T and 24xSFP+ Layer 3 Guia Do Administrador

Protocol-independent multicast sparse mode (PIM-SM) is used to efficiently route multicast 
traffic to multicast groups that can span wide area networks where bandwidth is a constraint.

PIM-SM uses shared trees by default and implements source-based trees for efficiency; it 
assumes that no hosts want the multicast traffic unless they specifically ask for it. It creates a 
shared distribution tree centered on a defined rendezvous point (RP). Traffic from this source 
is relayed to the receivers. Senders first send the multicast data to the RP, which in turn 
sends the data down the shared tree to the receivers. Shared trees centered on an RP do not 
necessarily provide the shortest, most optimal path. In such cases PIM-SM provides a means 
to switch to more efficient source-specific trees. A data threshold rate is defined for toggling 
between trees. PIM-SM uses a bootstrap router (BSR), which advertises information to other 

Subnet 192.168.1.0/24

Port

Port 1/0/9

Port

Subnet 192.168.3.0/24

IP 192.168.1.1

1/0/13

1/0/1

Subnet 192.168.6.0/24

Subnet 192.168.2.0/24

Subnet 192.168.5.0/24

Subnet 192.168.4.0/24

IP 192.168.4.2

Port 1/0/10

Port

1/0/11

Port

1/0/21

Port 1/0/22

Port 1/0/22

Port

1/0/24

Port

1/0/21