• Source or Shortest Path trees
•More resource intensive; requires more stateà n(S x G)
•You get optimal paths from source to all receivers,
minimizes delay
•Best for one-to-many distribution
• Shared or Core Based trees
•Uses less resources; less memory àn(G)
•You may get sub optimal paths from source to all
receivers, depending on
topology
•The RP (core) itself and its location may
affect performance
•Best for many-to-many distribution
•May be necessary for source discovery (PIM-SM)