IS-IS Traffic Engineering (TE) Metric Extensions
RFC 7810
| Document | Type |
RFC - Proposed Standard
(May 2016; Errata)
Obsoleted by RFC 8570
|
|
|---|---|---|---|
| Last updated | 2018-12-20 | ||
| Replaces | draft-previdi-isis-te-metric-extensions | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Hannes Gredler | ||
| Shepherd write-up | Show (last changed 2015-12-11) | ||
| IESG | IESG state | RFC 7810 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alvaro Retana | ||
| Send notices to | "Hannes Gredler" <hannes@gredler.at>, aretana@cisco.com | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) S. Previdi, Ed.
Request for Comments: 7810 Cisco Systems, Inc.
Category: Standards Track S. Giacalone
ISSN: 2070-1721 Microsoft
D. Ward
Cisco Systems, Inc.
J. Drake
Juniper Networks
Q. Wu
Huawei
May 2016
IS-IS Traffic Engineering (TE) Metric Extensions
Abstract
In certain networks, such as, but not limited to, financial
information networks (e.g., stock market data providers), network-
performance criteria (e.g., latency) are becoming as critical to
data-path selection as other metrics.
This document describes extensions to IS-IS Traffic Engineering
Extensions (RFC 5305) such that network-performance information can
be distributed and collected in a scalable fashion. The information
distributed using IS-IS TE Metric Extensions can then be used to make
path-selection decisions based on network performance.
Note that this document only covers the mechanisms with which
network-performance information is distributed. The mechanisms for
measuring network performance or acting on that information, once
distributed, are outside the scope of this document.
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/rfc7810.
Previdi, et al. Standards Track [Page 1]
RFC 7810 IS-IS TE Metric Extensions May 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
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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 . . . . . . . . . . . . 4
2. TE Metric Extensions to IS-IS . . . . . . . . . . . . . . . . 4
3. Interface and Neighbor Addresses . . . . . . . . . . . . . . 5
4. Sub-TLV Details . . . . . . . . . . . . . . . . . . . . . . . 6
4.1. Unidirectional Link Delay Sub-TLV . . . . . . . . . . . . 6
4.2. Min/Max Unidirectional Link Delay Sub-TLV . . . . . . . . 7
4.3. Unidirectional Delay Variation Sub-TLV . . . . . . . . . 8
4.4. Unidirectional Link Loss Sub-TLV . . . . . . . . . . . . 9
4.5. Unidirectional Residual Bandwidth Sub-TLV . . . . . . . . 10
4.6. Unidirectional Available Bandwidth Sub-TLV . . . . . . . 11
4.7. Unidirectional Utilized Bandwidth Sub-TLV . . . . . . . . 12
5. Announcement Thresholds and Filters . . . . . . . . . . . . . 12
6. Announcement Suppression . . . . . . . . . . . . . . . . . . 13
7. Network Stability and Announcement Periodicity . . . . . . . 14
8. Enabling and Disabling Sub-TLVs . . . . . . . . . . . . . . . 14
9. Static Metric Override . . . . . . . . . . . . . . . . . . . 14
10. Compatibility . . . . . . . . . . . . . . . . . . . . . . . . 14
11. Security Considerations . . . . . . . . . . . . . . . . . . . 15
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
13. References . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.1. Normative References . . . . . . . . . . . . . . . . . . 16
13.2. Informative References . . . . . . . . . . . . . . . . . 16
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 17
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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