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BCP 206
RFC 7926
Title: Problem Statement and Architecture for
Information Exchange between Interconnected
Traffic-Engineered Networks
Author: A. Farrel, Ed.,
J. Drake, N. Bitar,
G. Swallow, D. Ceccarelli,
X. Zhang
Status: Best Current Practice
Stream: IETF
Date: July 2016
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 67
Characters: 159905
See Also: BCP 206
I-D Tag: draft-ietf-teas-interconnected-te-info-exchange-07.txt
URL: https://www.rfc-editor.org/info/rfc7926
DOI: http://dx.doi.org/10.17487/RFC7926
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.
This document is a product of the Traffic Engineering Architecture and
Signaling Working Group of the IETF.
BCP: This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited.
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