Problem Statement and Architecture for Information Exchange between Interconnected Traffic-Engineered Networks
RFC 7926
| Document | Type |
RFC - Best Current Practice
(July 2016; No errata)
Also known as BCP 206
|
|
|---|---|---|---|
| Last updated | 2016-07-26 | ||
| Replaces | draft-ietf-ccamp-interconnected-te-info-exchange | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication (wg milestone: Mar 2016 - Submit first interco... ) | |
| Document shepherd | Lou Berger | ||
| Shepherd write-up | Show (last changed 2016-03-22) | ||
| IESG | IESG state | RFC 7926 (Best Current Practice) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Deborah Brungard | ||
| Send notices to | "Lou Berger" <lberger@labn.net> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | No IC | ||
Internet Engineering Task Force (IETF) A. Farrel, Ed.
Request for Comments: 7926 J. Drake
BCP: 206 Juniper Networks
Category: Best Current Practice N. Bitar
ISSN: 2070-1721 Nokia
G. Swallow
Cisco Systems, Inc.
D. Ceccarelli
Ericsson
X. Zhang
Huawei
July 2016
Problem Statement and Architecture for Information Exchange
between Interconnected Traffic-Engineered Networks
Abstract
In Traffic-Engineered (TE) systems, it is sometimes desirable to
establish an end-to-end TE path with a set of constraints (such as
bandwidth) across one or more networks from a source to a
destination. TE information is the data relating to nodes and TE
links that is used in the process of selecting a TE path. TE
information is usually only available within a network. We call such
a zone of visibility of TE information a domain. An example of a
domain may be an IGP area or an Autonomous System.
In order to determine the potential to establish a TE path through a
series of connected networks, it is necessary to have available a
certain amount of TE information about each network. This need not
be the full set of TE information available within each network but
does need to express the potential of providing TE connectivity.
This subset of TE information is called TE reachability information.
This document sets out the problem statement for the exchange of TE
information between interconnected TE networks in support of end-to-
end TE path establishment and describes the best current practice
architecture to meet this problem statement. For reasons that are
explained in this document, this work is limited to simple TE
constraints and information that determine TE reachability.
Farrel, et al. Best Current Practice [Page 1]
RFC 7926 Information Exchange between TE Networks July 2016
Status of This Memo
This memo documents an Internet Best Current Practice.
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
BCPs 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
http://www.rfc-editor.org/info/rfc7926.
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
(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.
Farrel, et al. Best Current Practice [Page 2]
RFC 7926 Information Exchange between TE Networks July 2016
Table of Contents
1. Introduction ....................................................5
1.1. Terminology ................................................6
1.1.1. TE Paths and TE Connections .........................6
1.1.2. TE Metrics and TE Attributes ........................6
1.1.3. TE Reachability .....................................7
1.1.4. Domain ..............................................7
1.1.5. Server Network ......................................7
1.1.6. Client Network ......................................7
1.1.7. Aggregation .........................................7
1.1.8. Abstraction .........................................8
1.1.9. Abstract Link .......................................8
1.1.10. Abstract Node or Virtual Node ......................8
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