IS-IS Traffic Engineering (TE) Metric Extensions
RFC 8570
| Document | Type |
RFC - Proposed Standard
(March 2019; No errata)
Obsoletes RFC 7810
|
|
|---|---|---|---|
| Last updated | 2019-03-15 | ||
| Replaces | draft-ginsberg-lsr-isis-rfc7810bis | ||
| Stream | IETF | ||
| Formats | plain text pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Ketan Talaulikar | ||
| Shepherd write-up | Show (last changed 2018-07-24) | ||
| IESG | IESG state | RFC 8570 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Alvaro Retana | ||
| Send notices to | Ketan Talaulikar <ketant@cisco.com>, aretana.ietf@gmail.com | ||
| IANA | IANA review state | IANA OK - Actions Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) L. Ginsberg, Ed.
Request for Comments: 8570 Cisco Systems, Inc.
Obsoletes: 7810 S. Previdi, Ed.
Category: Standards Track Huawei
ISSN: 2070-1721 S. Giacalone
Microsoft
D. Ward
Cisco Systems, Inc.
J. Drake
Juniper Networks
Q. Wu
Huawei
March 2019
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). These extensions provide a way to distribute
and collect network-performance information 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.
This document obsoletes RFC 7810.
Ginsberg, et al. Standards Track [Page 1]
RFC 8570 IS-IS TE Metric Extensions March 2019
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/rfc8570.
Copyright Notice
Copyright (c) 2019 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.
Ginsberg, et al. Standards Track [Page 2]
RFC 8570 IS-IS TE Metric Extensions March 2019
Table of Contents
1. Introduction ....................................................3
1.1. Requirements Language ......................................4
2. TE Metric Extensions to IS-IS ...................................5
3. Interface and Neighbor Addresses ................................6
4. Sub-TLV Details .................................................7
4.1. Unidirectional Link Delay Sub-TLV ..........................7
4.2. Min/Max Unidirectional Link Delay Sub-TLV ..................8
4.3. Unidirectional Delay Variation Sub-TLV .....................9
4.4. Unidirectional Link Loss Sub-TLV ..........................10
4.5. Unidirectional Residual Bandwidth Sub-TLV .................11
4.6. Unidirectional Available Bandwidth Sub-TLV ................12
4.7. Unidirectional Utilized Bandwidth Sub-TLV .................13
5. Announcement Thresholds and Filters ............................13
6. Announcement Suppression .......................................14
7. Network Stability and Announcement Periodicity .................15
8. Enabling and Disabling Sub-TLVs ................................15
9. Static Metric Override .........................................15
10. Compatibility .................................................15
11. Security Considerations .......................................15
12. IANA Considerations ...........................................16
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