Shortest Path And Shared Center Tree Networks

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SPT [Shortest Path Tree] is used by only ONE source (the root of the tree) to reach all receivers. Also known as a Directed Tree, packets only flow from the root (source) to the leaves (receivers). SPT content can also be distributed across different trees.

ST [Shared Tree] is where there are MANY sources to reach all receivers. That is, each tree (source) is also a root (receiver). This is also referred to as SCT [Shared Center Tree] as the content is at the center of the distribution tree. There is research that suggests that Shared Trees have 25% less delay than SPT as content is closer to the receiver.

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