Population Count Extensions to Protocol Independent Multicast (PIM)
RFC 6807
| Document | Type | RFC - Experimental (December 2012; No errata) | |
|---|---|---|---|
| Authors | Dino Farinacci , Greg Shepherd , Stig Venaas , Yiqun Cai | ||
| Last updated | 2015-10-14 | ||
| Replaces | draft-farinacci-pim-pop-count | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
| Stream | WG state | WG Document | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6807 (Experimental) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Adrian Farrel | ||
| IESG note | Mike McBride (mmcbride7@gmail.com) is the document shepherd. | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) D. Farinacci
Request for Comments: 6807 G. Shepherd
Category: Experimental S. Venaas
ISSN: 2070-1721 Cisco Systems
Y. Cai
Microsoft
December 2012
Population Count Extensions to Protocol Independent Multicast (PIM)
Abstract
This specification defines a method for providing multicast
distribution-tree accounting data. Simple extensions to the Protocol
Independent Multicast (PIM) protocol allow a rough approximation of
tree-based data in a scalable fashion.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. This document is a product of the Internet Engineering
Task Force (IETF). It represents the consensus of the IETF
community. It has received public review and has been approved for
publication by the Internet Engineering Steering Group (IESG). Not
all documents approved by the IESG are a candidate for any level of
Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6807.
Farinacci, et al. Experimental [Page 1]
RFC 6807 Population Count Extensions to PIM December 2012
Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Notation . . . . . . . . . . . . . . . . . . 4
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
2. Pop-Count-Supported Hello Option . . . . . . . . . . . . . . . 4
3. New Pop-Count Join Attribute Format . . . . . . . . . . . . . 5
3.1. Options . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1. Link Speed Encoding . . . . . . . . . . . . . . . . . 10
3.2. Example Message Layouts . . . . . . . . . . . . . . . . . 10
4. How to Use Pop-Count Encoding . . . . . . . . . . . . . . . . 11
5. Implementation Approaches . . . . . . . . . . . . . . . . . . 12
6. Caveats . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
8. Security Considerations . . . . . . . . . . . . . . . . . . . 13
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 14
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10.1. Normative References . . . . . . . . . . . . . . . . . . . 14
10.2. Informative References . . . . . . . . . . . . . . . . . . 14
Farinacci, et al. Experimental [Page 2]
RFC 6807 Population Count Extensions to PIM December 2012
1. Introduction
This document specifies a mechanism to convey accounting information
using the Protocol Independent Multicast (PIM) protocol [RFC4601]
[RFC5015]. Putting the mechanism in PIM allows efficient
distribution and maintenance of such accounting information.
Previous mechanisms require data to be correlated from multiple
router sources.
This mechanism allows a single router to be queried to obtain
accounting and statistic information for a multicast distribution
tree as a whole or any distribution sub-tree downstream from a
queried router. The amount of information is fixed and does not
increase as multicast membership, tree diameter, or branching
increases.
The sort of accounting data this specification provides, on a per-
multicast-route basis, are:
1. The number of branches in a distribution tree.
2. The membership type of the distribution tree, that is, Source-
Specific Multicast (SSM) or Any-Source Multicast (ASM).
3. Routing domain and time zone boundary information.
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