draft-ietf-pim-rpf-vector-01.txt   draft-ietf-pim-rpf-vector-02.txt 
PIM WG IJ. Wijnands PIM WG IJ. Wijnands
Internet-Draft A. Boers Internet-Draft A. Boers
Expires: April 4, 2006 E. Rosen Expires: August 5, 2006 E. Rosen
Cisco Systems, Inc. Cisco Systems, Inc.
october 2005 february 2006
The RPF Vector TLV The RPF Vector TLV
draft-ietf-pim-rpf-vector-01 draft-ietf-pim-rpf-vector-02
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt. http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
This Internet-Draft will expire on April 4, 2006. This Internet-Draft will expire on August 5, 2006.
Copyright Notice Copyright Notice
Copyright (C) The Internet Society (2005). Copyright (C) The Internet Society (2006).
Abstract Abstract
This document describes a use of the PIM Join Attribute as defined in This document describes a use of the PIM Join Attribute as defined in
draft-ietf-pim-join-attributes[I-D.ietf-pim-join-attributes] which draft-ietf-pim-join-attributes[I-D.ietf-pim-join-attributes] which
enables PIM to build multicast trees through an MPLS-enabled network, enables PIM to build multicast trees through an MPLS-enabled network,
even if that network's IGP does not have a route to the source of the even if that network's IGP does not have a route to the source of the
tree. tree.
Table of Contents Table of Contents
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attribute is not inserted if the RPF neighbor was chosen via an attribute is not inserted if the RPF neighbor was chosen via an
assert process and the RPF neighbor is different from the RPF assert process and the RPF neighbor is different from the RPF
neighbor that would have been selected via the local routing table. neighbor that would have been selected via the local routing table.
In all other cases the Vector has to be included in the Join message. In all other cases the Vector has to be included in the Join message.
3. Vector Attribute TLV Format 3. Vector Attribute TLV Format
0 1 2 3 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|F|S| Type | Length | IP address |F|S| Type | Length | Encoded-Unicast address
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-....... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-.......
F bit F bit
----- -----
Forward Unknown TLV. If this bit is set the TLV is forwarded Forward Unknown TLV. If this bit is set the TLV is forwarded
regardless if the router understands the Type. regardless if the router understands the Type.
S bit S bit
----- -----
Bottom of Stack. If this bit is set then this is the last Bottom of Stack. If this bit is set then this is the last
TLV in the stack. TLV in the stack.
Type Type
---- ----
The Vector Attribute type is 0. The Vector Attribute type is 0.
Length Length
------ ------
Length in bytes is 4. Length depending on Address Family of Encoded-Unicast address.
Value Value
----- -----
IPv4 address. Encoded-Unicast address, see PIM-SM
[I-D.ietf-pim-sm-v2-new]
4. Acknowledgments 4. Acknowledgments
The authors would like to thank Yakov Rekhter and Dino Farinacci for The authors would like to thank Yakov Rekhter and Dino Farinacci for
their initial ideas on this topic. their initial ideas on this topic.
5. References 5. References
5.1. Normative References 5.1. Normative References
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This document and the information contained herein are provided on an This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Copyright Statement Copyright Statement
Copyright (C) The Internet Society (2005). This document is subject Copyright (C) The Internet Society (2006). This document is subject
to the rights, licenses and restrictions contained in BCP 78, and to the rights, licenses and restrictions contained in BCP 78, and
except as set forth therein, the authors retain all their rights. except as set forth therein, the authors retain all their rights.
Acknowledgment Acknowledgment
Funding for the RFC Editor function is currently provided by the Funding for the RFC Editor function is currently provided by the
Internet Society. Internet Society.
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