Graceful Shutdown in MPLS and Generalized MPLS Traffic Engineering Networks
RFC 5817
Document | Type | RFC - Informational (April 2010; Errata) | |
---|---|---|---|
Authors | Vasseur Jp , Jonathan Newton , Zafar Ali , Anca Zamfir | ||
Last updated | 2020-01-21 | ||
Replaces | draft-ali-ccamp-mpls-graceful-shutdown | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5817 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) Z. Ali Request for Comments: 5817 JP. Vasseur Category: Informational A. Zamfir ISSN: 2070-1721 Cisco Systems, Inc. J. Newton Cable and Wireless April 2010 Graceful Shutdown in MPLS and Generalized MPLS Traffic Engineering Networks Abstract MPLS-TE Graceful Shutdown is a method for explicitly notifying the nodes in a Traffic Engineering (TE) enabled network that the TE capability on a link or on an entire Label Switching Router (LSR) is going to be disabled. MPLS-TE graceful shutdown mechanisms are tailored toward addressing planned outage in the network. This document provides requirements and protocol mechanisms to reduce or eliminate traffic disruption in the event of a planned shutdown of a network resource. These operations are equally applicable to both MPLS-TE and its Generalized MPLS (GMPLS) extensions. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. 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/rfc5817. Ali, et al. Informational [Page 1] RFC 5817 MPLS Graceful Shutdown April 2010 Copyright Notice Copyright (c) 2010 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. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction ....................................................3 2. Terminology .....................................................3 3. Requirements for Graceful Shutdown ..............................4 4. Mechanisms for Graceful Shutdown ................................5 4.1. OSPF / IS-IS Mechanisms for Graceful Shutdown ..............5 4.2. RSVP-TE Signaling Mechanisms for Graceful Shutdown .........6 5. Manageability Considerations ....................................8 6. Security Considerations .........................................8 7. Acknowledgments .................................................8 8. References ......................................................9 8.1. Normative References .......................................9 8.2. Informative References .....................................9 Ali, et al. Informational [Page 2] RFC 5817 MPLS Graceful Shutdown April 2010 1. Introduction When outages in a network are planned (e.g., for maintenance purposes), some mechanisms can be used to avoid traffic disruption. This is in contrast with unplanned network element failure, where traffic disruption can be minimized thanks to recovery mechanisms, but may not be avoided. Therefore, a Service Provider may desire to gracefully (temporarily or indefinitely) remove a TE link, a group ofShow full document text