A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Path Computation Element WG of the IETF.
Title : PCEP Extension for Flow Specification
Authors : Dhruv Dhody
Adrian Farrel
Zhenbin Li
Filename : draft-ietf-pce-pcep-flowspec-13.txt
Pages : 34
Date : 2021-10-14
Abstract:
The Path Computation Element (PCE) is a functional component capable
of selecting paths through a traffic engineering network. These
paths may be supplied in response to requests for computation, or may
be unsolicited requests issued by the PCE to network elements. Both
approaches use the PCE Communication Protocol (PCEP) to convey the
details of the computed path.
Traffic flows may be categorized and described using "Flow
Specifications". RFC 8955 defines the Flow Specification and
describes how Flow Specification Components are used to describe
traffic flows. RFC 8955 also defines how Flow Specifications may be
distributed in BGP to allow specific traffic flows to be associated
with routes.
This document specifies a set of extensions to PCEP to support
dissemination of Flow Specifications. This allows a PCE to indicate
what traffic should be placed on each path that it is aware of.
The extensions defined in this document include the creation, update,
and withdrawal of Flow Specifications via PCEP, and can be applied to
tunnels initiated by the PCE or to tunnels where control is delegated
to the PCE by the PCC. Furthermore, a PCC requesting a new path can
include Flow Specifications in the request to indicate the purpose of
the tunnel allowing the PCE to factor this into the path computation.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-pcep-flowspec/
There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-pce-pcep-flowspec-13
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-pce-pcep-flowspec-13
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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