"The PIM Join Attribute Format", A Boers, IJsbrand Wijnands, Eric Rosen, 28-Jul-08. ( bytes)

A Protocol Independent Multicast (PIM) Join message sent by a given node identifies one or more multicast distribution trees that that node wishes to join. Each tree is identified by a multicast group address and a source address, which is possibly a "wild card". Under certain conditions it can be useful, when joining a tree, to specify additional information related to the construction of the tree. However, there is up to now no way to do so. This document describes a modification of the Join message that allows a node to associate attributes with a particular tree. The attributes are encoded in Type-Length-Value format.

"Authentication and Confidentiality in PIM-SM Link-local Messages", John Atwood, Salekul Islam, Maziar Siami, 28-Aug-08. ( bytes)

RFC 4601 mandates the use of IPsec to ensure authentication of the link-local messages in the Protocol Independent Multicast - Sparse Mode (PIM-SM) routing protocol. This document specifies mechanisms to authenticate the PIM-SM link local messages using the IP security (IPsec) Authentication Header (AH) or Encapsulating Security Payload (ESP). It specifies optional mechanisms to provide confidentiality using the ESP. Manual keying is specified as the mandatory and default group key management solution. To deal with issues of scalability and security that exist with manual keying, an optional automated group key management mechanism is specified.

"Population Count Extensions to PIM", Dino Farinacci, Greg Shepherd, 28-Jul-08. ( bytes)

This specification defines a method for providing multicast distribution-tree accounting data for billing and debugging. Simple extensions to the PIM protocol allow a rough approximation of tree- based data in a scalable fashion.

"A Reliable Transport Mechanism for PIM", Dino Farinacci, IJsbrand Wijnands, Apoorva Karan, A Boers, Maria Napierala, 22-Aug-08. ( bytes)

This draft describes how a reliable transport mechanism can be used by the PIM protocol to optimize CPU and bandwidth resource utilization by eliminating periodic Join/Prune message transmission. This draft proposes a modular extension to PIM to use either the TCP or SCTP transport protocol.

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