Redundancy Mechanism for Inter-domain VPLS Service
RFC 7309
Document | Type | RFC - Proposed Standard (July 2014; No errata) | |
---|---|---|---|
Authors | Zhihua Liu , Lizhong Jin , Ran Chen , Dennis Cai , Samer Salam | ||
Last updated | 2015-10-14 | ||
Replaces | draft-liu-l2vpn-vpls-inter-domain-redundancy | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Giles Heron | ||
Shepherd write-up | Show (last changed 2014-05-14) | ||
IESG | IESG state | RFC 7309 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) Z. Liu Request for Comments: 7309 China Telecom Category: Standards Track L. Jin ISSN: 2070-1721 R. Chen ZTE Corporation D. Cai S. Salam Cisco July 2014 Redundancy Mechanism for Inter-domain VPLS Service Abstract In many existing Virtual Private LAN Service (VPLS) inter-domain deployments (based on RFC 4762), pseudowire (PW) connectivity offers no Provider Edge (PE) node redundancy, or offers PE node redundancy with only a single domain. This deployment approach incurs a high risk of service interruption, since at least one domain will not offer PE node redundancy. This document describes an inter-domain VPLS solution that provides PE node redundancy across domains. 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 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/rfc7309. Liu, et al. Standards Track [Page 1] RFC 7309 Redundancy for VPLS Inter-domain July 2014 Copyright Notice Copyright (c) 2014 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. Conventions Used in This Document . . . . . . . . . . . . . . 3 3. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . 3 4. Network Use Case . . . . . . . . . . . . . . . . . . . . . . 4 5. PW Redundancy Application Procedure for Inter-domain Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . 6 5.1. ICCP Switchover Condition . . . . . . . . . . . . . . . . 6 5.1.1. Inter-domain PW Failure . . . . . . . . . . . . . . . 6 5.1.2. PE Node Isolation . . . . . . . . . . . . . . . . . . 6 5.1.3. PE Node Failure . . . . . . . . . . . . . . . . . . . 6 5.2. Inter-domain Redundancy with Two PWs . . . . . . . . . . 6 5.3. Inter-domain Redundancy with Four PWs . . . . . . . . . . 7 6. Management Considerations . . . . . . . . . . . . . . . . . . 9 7. Security Considerations . . . . . . . . . . . . . . . . . . . 9 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10 9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 10 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 10 10.1. Normative references . . . . . . . . . . . . . . . . . . 10 10.2. Informative references . . . . . . . . . . . . . . . . . 10 Liu, et al. Standards Track [Page 2] RFC 7309 Redundancy for VPLS Inter-domain July 2014 1. Introduction In many existing Virtual Private LAN Service (VPLS) deployments based on [RFC4762], pseudowire (PW) connectivity offers no Provider Edge (PE) node redundancy, or offers PE node redundancy with only a single domain. This deployment approach incurs a high risk of service interruption, since at least one domain will not offer PE node redundancy. This document describes an inter-domain VPLS solution that provides PE node redundancy across domains. The redundancy mechanism will provide PE node redundancy and link redundancy in both domains. The PE throughout the document refers to a routing and bridging capable PE defined in [RFC4762], Section 10. The domain in this document refers to an autonomous system (AS), or otherShow full document text