draft-ietf-mboned-ssm232-01.txt   draft-ietf-mboned-ssm232-02.txt 
Network Working Group Greg Shepherd Network Working Group Greg Shepherd
INTERNET DRAFT Juniper Networks INTERNET DRAFT Juniper Networks
E. Luczycki
Yahoo! Broadcast
Rob Rockell Rob Rockell
Sprinlink David Meyer
Sprint
Category Best Current Practices Category Best Current Practices
April, 2001 Feburary, 2002
Source-Specific Protocol Independent Multicast in 232/8 Source-Specific Protocol Independent Multicast in 232/8
<draft-ietf-mboned-ssm232-01.txt> <draft-ietf-mboned-ssm232-02.txt>
1. Status of this Memo 1. Status of this Memo
This document specifies an Internet Best Current Practices for the This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited. improvements. Distribution of this memo is unlimited.
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC 2026. all provisions of Section 10 of RFC 2026.
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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.
2. Copyright Notice 2. Copyright Notice
Copyright (C) The Internet Society (2001). All Rights Reserved. Copyright (C) The Internet Society (2002). All Rights Reserved.
3. Abstract 3. Abstract
IP Multicast group addresses in the 232/8 (232.0.0.0 to IP Multicast group addresses in the 232/8 (232.0.0.0 to
232.255.255.255) range are designated as source-specific multicast 232.255.255.255) range are designated as source-specific multicast
[SSM] destination addresses and are reserved for use by source- [SSM] destination addresses and are reserved for use by source-
specific applications and protocols [IANA]. This document defines specific applications and protocols [IANA]. This document defines
operational recommendations to ensure source-specific behavior within operational recommendations to ensure source-specific behavior within
the 232/8 range. the 232/8 range.
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- preventing RP from accepting (*,G) join - preventing RP from accepting (*,G) join
Within a local PIM domain, any last-hop router NOT preventing (*,G) Within a local PIM domain, any last-hop router NOT preventing (*,G)
joins MAY trigger (*,G) state toward the RP which intersects an joins MAY trigger (*,G) state toward the RP which intersects an
existing (S,G) tree, allowing the receiver on the shared tree to existing (S,G) tree, allowing the receiver on the shared tree to
receive the data. So if the last-hop routers are not preventing (*,G) receive the data. So if the last-hop routers are not preventing (*,G)
joins, then all routers in the domain must also prevent (*,G) joins. joins, then all routers in the domain must also prevent (*,G) joins.
5.4. Preventing RP's as candidates for 232/8 5.4. Preventing RP's as candidates for 232/8
Because PIM-SS does not require an RP, all RPs SHOULD NOT offer them- Because PIM-SS does not require an RP, all RPs SHOULD NOT offer themˇ
selves as candidates in the 232/8 range. This can be accomplished by selves as candidates in the 232/8 range. This can be accomplished by
- preventing RP/BSR from announcing in the 232/8 range - preventing RP/BSR from announcing in the 232/8 range
- preventing DRs from accepting delegations in this range - preventing DRs from accepting delegations in this range
- precluding RP functionality on RP for the 232/8 range - precluding RP functionality on RP for the 232/8 range
6. References 6. References
[IANA] http://www.iana.org [IANA] http://www.iana.org
[SSM] Holbrook, H., Cain, B., "Source-Specific Multicast for IP [SSM] Holbrook, H., Cain, B., "Source-Specific Multicast",
(SSM)", draft-holbrook-ssm-02.txt, March, 2001. draft-ietf-ssm-arch-00.txt, November, 2001.
[RFC2119] S. Bradner, "Key words for use in RFCs to Indicate [RFC2119] S. Bradner, "Key words for use in RFCs to Indicate
Requirement Levels", RFC 2119, March, 1997. Requirement Levels", RFC 2119, March, 1997.
[RFC2362] D. Estrin, et. al., "Protocol Independent Multicast-Sparse [RFC2362] D. Estrin, et. al., "Protocol Independent Multicast-Sparse
Mode (PIM-SM): Protocol Specification", RFC 2362, June, Mode (PIM-SM): Protocol Specification", RFC 2362, June,
1998. 1998.
[MSDP] D. Meyer, Editor, "Multicast Source Discovery Protocol [MSDP] D. Meyer and Bill Fenner (Editors), "The Multicast
(MSDP)", draft-ietf-msdp-spec-07.txt, April, 2001. Source Discovery Protocol (MSDP)", draft-ietf-msdp-spec-13.txt,
November 2001.
7. Author's Addresses 7. Author's Addresses
Greg Shepherd Greg Shepherd
Juniper Networks Juniper Networks
Email: shep@juniper.net Email: shep@juniper.net
Ed Luczycki
Yahoo! Broadcast
Email: eds@yahoo-inc.com
Robert Rockell Robert Rockell
Sprint Internet Service Center Sprint
Reston, Virginia Email: rrockell@sprint.net
Email: rrockell@sprintlink.net
David Meyer
Sprint
Email: dmm@sprint.net
8. Full Copyright Statement 8. Full Copyright Statement
Copyright (C) The Internet Society (2001). All Rights Reserved. Copyright (C) The Internet Society (2002). All Rights Reserved.
This document and translations of it may be copied and furnished to This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this included on all such copies and derivative works. However, this docˇ
document itself may not be modified in any way, such as by removing ument itself may not be modified in any way, such as by removing the
the copyright notice or references to the Internet Society or other copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of develop- Internet organizations, except as needed for the purpose of developˇ
ing Internet standards in which case the procedures for copyrights ing Internet standards in which case the procedures for copyrights
defined in the Internet Standards process must be followed, or as defined in the Internet Standards process must be followed, or as
required to translate it into languages other than English. required to translate it into languages other than English.
The limited permissions granted above are perpetual and will not be The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns. revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MER- HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERˇ
CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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