Bi-Directional Shared Trees in PIM-SM

Document Type Expired Internet-Draft (individual)
Last updated 1999-06-18
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This proposal extends the PIM-SM [1] mechanism for multicast datagram forwarding. PIM-SM constructs and maintains uni-directional shared trees and uni-directional source trees. We describe how we can extend the elements of operation of sparse-mode PIM to support bi- directional shared trees.


Deborah Estrin (
Dino Farinacci (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)