Multicast VPN fast upstream failover
draft-ietf-bess-mvpn-fast-failover-02
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2017-03-13
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draft-morin-bess-mvpn-fast-failover
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Martin Vigoureux
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"Martin Vigoureux" <martin.vigoureux@alcatel-lucent.com>
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Network Working Group T. Morin, Ed.
Internet-Draft Orange
Intended status: Standards Track R. Kebler, Ed.
Expires: September 14, 2017 Juniper Networks
March 13, 2017
Multicast VPN fast upstream failover
draft-ietf-bess-mvpn-fast-failover-02
Abstract
This document defines multicast VPN extensions and procedures that
allow fast failover for upstream failures, by allowing downstream PEs
to take into account the status of Provider-Tunnels (P-tunnels) when
selecting the upstream PE for a VPN multicast flow, and extending BGP
MVPN routing so that a C-multicast route can be advertized toward a
standby upstream PE.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 14, 2017.
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
Morin & Kebler Expires September 14, 2017 [Page 1]
Internet-Draft mVPN fast upstream failover March 2017
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 . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. UMH Selection based on tunnel status . . . . . . . . . . . . 3
3.1. Determining the status of a tunnel . . . . . . . . . . . 4
3.1.1. mVPN tunnel root tracking . . . . . . . . . . . . . . 5
3.1.2. PE-P Upstream link status . . . . . . . . . . . . . . 5
3.1.3. P2MP RSVP-TE tunnels . . . . . . . . . . . . . . . . 5
3.1.4. Leaf-initiated P-tunnels . . . . . . . . . . . . . . 6
3.1.5. (S,G) counter information . . . . . . . . . . . . . . 6
3.1.6. BFD Discriminator . . . . . . . . . . . . . . . . . . 6
3.1.7. Per PE-CE link BFD Discriminator . . . . . . . . . . 8
4. Standby C-multicast route . . . . . . . . . . . . . . . . . . 9
4.1. Downstream PE behavior . . . . . . . . . . . . . . . . . 10
4.2. Upstream PE behavior . . . . . . . . . . . . . . . . . . 11
4.3. Reachability determination . . . . . . . . . . . . . . . 12
4.4. Inter-AS . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4.1. Inter-AS procedures for downstream PEs, ASBR fast
failover . . . . . . . . . . . . . . . . . . . . . . 13
4.4.2. Inter-AS procedures for ASBRs . . . . . . . . . . . . 13
5. Hot leaf standby . . . . . . . . . . . . . . . . . . . . . . 13
6. Duplicate packets . . . . . . . . . . . . . . . . . . . . . . 14
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
8. Security Considerations . . . . . . . . . . . . . . . . . . . 15
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 15
10. Contributor Addresses . . . . . . . . . . . . . . . . . . . . 15
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 17
11.1. Normative References . . . . . . . . . . . . . . . . . . 17
11.2. Informative References . . . . . . . . . . . . . . . . . 17
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 18
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