[pim] New PIM Charter rev3

[Mike McBride <mmcbride at cisco.com>]

All comments, both on and off list, have been addressed in the following 
revised Charter/Milestones. Thank you for you feedback. Please review this 
latest revision:

Description of Working Group:

The Protocol Independent Multicast (PIM) Working Group has completed the 
standardization of PIM with RFC 4601. The WG has determined there is 
additional work to be accomplished and is chartered to standardize 
extensions to RFC 4601 - Protocol Independent Multicast Version 2 - Sparse 
Mode. These PIM extensions could involve reliability, resiliency, 
scalability, management, and security.

The PIM WG will also consider implications of VPN service on PIM when it's 
a component of that service or when PIM interfaces with that service at a 
VPN edge. If L2VPN or L3VPN WGs determine that support for multicast in 
L2VPNs and/or L3VPNs requires extensions to PIM, then such extensions 
could be developed within the PIM WG.

Additional work on PIM-BIDIR and BSR may also be necessary.

The working group will continue to specify the MIBs required for PIM and 
its enhancements.

The PIM WG will further enhance RFC4601 as an even more scalable, 
efficient and robust multicast routing protocol, which is capable of 
supporting thousands of groups, different types of multicast applications, 
and all major underlying layer-2 subnetwork technologies.

The working group will determine if a Version 3 of PIM is required.

Goals and Milestones:

Mar    2007     Ratify new WG charter and milestones
Jul    2007     Submit the BSR MIB as a Proposed Standard
Nov    2007     Propose a more reliable pim solution which includes 
refresh reduction
Nov    2007     Submit a generic TLV PIM Join Attribute Proposed Standard 
draft
Nov    2007     Submit RPF Vector (use of PIM Join Attribute) as a 
Proposed Standard
Nov    2007     Submit a mechanism to authenticate PIM link local messages 
as PS
Nov    2007     Submit an Informational PIM last hop threats document.

thanks,
mike

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