Multicast VPN State Damping
RFC 7899
| Document | Type |
RFC - Proposed Standard
(June 2016; No errata)
Updates RFC 6514
|
|
|---|---|---|---|
| Last updated | 2016-06-28 | ||
| Replaces | draft-morin-bess-multicast-damping | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Martin Vigoureux | ||
| Shepherd write-up | Show (last changed 2016-01-28) | ||
| IESG | IESG state | RFC 7899 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alvaro Retana | ||
| Send notices to | aretana@cisco.com | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | No IANA Actions | ||
Internet Engineering Task Force (IETF) T. Morin, Ed.
Request for Comments: 7899 S. Litkowski
Updates: 6514 Orange
Category: Standards Track K. Patel
ISSN: 2070-1721 Cisco Systems
Z. Zhang
R. Kebler
J. Haas
Juniper Networks
June 2016
Multicast VPN State Damping
Abstract
This document describes procedures to damp Multicast VPN (MVPN)
routing state changes and control the effect of the churn due to the
multicast dynamicity in customer sites. The procedures described in
this document are applicable to BGP-based multicast VPN and help
avoid uncontrolled control-plane load increase in the core routing
infrastructure. The new procedures proposed were inspired by BGP
unicast route damping principles that have been adapted to multicast.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on
Internet Standards is available in Section 2 of RFC 7841.
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/rfc7899.
Morin, et al. Standards Track [Page 1]
RFC 7899 MVPN Damping June 2016
Copyright Notice
Copyright (c) 2016 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
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Existing Mechanisms . . . . . . . . . . . . . . . . . . . . . 5
4.1. Rate-Limiting Multicast Control Traffic . . . . . . . . . 5
4.2. Existing PIM, IGMP, and MLD Timers . . . . . . . . . . . 6
4.3. BGP Route Damping . . . . . . . . . . . . . . . . . . . . 6
5. Procedures for Multicast State Damping . . . . . . . . . . . 7
5.1. PIM Procedures . . . . . . . . . . . . . . . . . . . . . 7
5.2. Procedures for Multicast VPN State Damping . . . . . . . 10
6. Procedures for P-Tunnel State Damping . . . . . . . . . . . . 12
6.1. Damping MVPN P-Tunnel Change Events . . . . . . . . . . . 12
6.2. Procedures for Ethernet VPNs . . . . . . . . . . . . . . 13
7. Operational Considerations . . . . . . . . . . . . . . . . . 13
7.1. Enabling Multicast Damping . . . . . . . . . . . . . . . 13
7.2. Troubleshooting and Monitoring . . . . . . . . . . . . . 13
7.3. Default and Maximum Values . . . . . . . . . . . . . . . 13
8. Security Considerations . . . . . . . . . . . . . . . . . . . 15
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.1. Normative References . . . . . . . . . . . . . . . . . . 16
9.2. Informative References . . . . . . . . . . . . . . . . . 17
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 17
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 18
Morin, et al. Standards Track [Page 2]
RFC 7899 MVPN Damping June 2016
1. Introduction
In a multicast VPN [RFC6513] deployed with BGP-based procedures
[RFC6514], when receivers in VPN sites join and leave a given
multicast group or channel through multicast membership control
protocols (Internet Group Management Protocol (IGMP) [RFC3376] and
Multicast Listener Discovery (MLD) [RFC3810]), multicast routing
protocols accordingly adjust multicast routing states and P-multicast
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