OSPF Traffic Engineering (OSPF-TE) Link Availability Extension for Links with Variable Discrete Bandwidth
RFC 8330
Document | Type | RFC - Proposed Standard (February 2018; No errata) | |
---|---|---|---|
Authors | Hao Long , Min Ye , Greg Mirsky , Alessandro D'Alessandro , Himanshu Shah | ||
Last updated | 2018-02-14 | ||
Replaces | draft-long-ccamp-ospf-availability-extension | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | Fatai Zhang | ||
Shepherd write-up | Show (last changed 2017-09-26) | ||
IESG | IESG state | RFC 8330 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | "Fatai Zhang" <zhangfatai@huawei.com> | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) H. Long Request for Comments: 8330 M. Ye Category: Standards Track Huawei Technologies Co., Ltd. ISSN: 2070-1721 G. Mirsky ZTE A. D'Alessandro Telecom Italia S.p.A. H. Shah Ciena February 2018 OSPF Traffic Engineering (OSPF-TE) Link Availability Extension for Links with Variable Discrete Bandwidth Abstract A network may contain links with variable discrete bandwidth, e.g., microwave and copper. The bandwidth of such links may change discretely in response to a changing external environment. The word "availability" is typically used to describe such links during network planning. This document defines a new type of Generalized Switching Capability-Specific Information (SCSI) TLV to extend the Generalized Multiprotocol Label Switching (GMPLS) Open Shortest Path First (OSPF) routing protocol. The extension can be used for route computation in a network that contains links with variable discrete bandwidth. Note that this document only covers the mechanisms by which the availability information is distributed. The mechanisms by which availability information of a link is determined and the use of the distributed information for route computation are outside the scope of this document. It is intended that technology-specific documents will reference this document to describe specific uses. 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 https://www.rfc-editor.org/info/rfc8330. Long, et al. Standards Track [Page 1] RFC 8330 Availability Extension to OSPF-TE February 2018 Copyright Notice Copyright (c) 2018 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 (https://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. Conventions Used in This Document ..........................3 2. Abbreviations ...................................................4 3. Overview ........................................................4 4. TE Metric Extension to OSPF-TE ..................................5 4.1. Availability SCSI-TLV ......................................5 4.2. Processing Procedures ......................................6 5. Security Considerations .........................................6 6. IANA Considerations .............................................7 7. References ......................................................7 7.1. Normative References .......................................7 7.2. Informative References .....................................8 Acknowledgments ...................................................10 Authors' Addresses ................................................10 Long, et al. Standards Track [Page 2] RFC 8330 Availability Extension to OSPF-TE February 2018 1. Introduction Some data-plane technologies, e.g., microwave and copper, allow seamless changes of maximum physical bandwidth through a set of known discrete values. The parameter "availability", as described in [G.827], [F.1703], and [P.530], is often used to describe the link capacity. The availability is a time scale, representing a proportion of the operating time that the requested bandwidth is ensured. To set up a Label Switched Path (LSP) across these links,Show full document text