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 : Hierarchical Stateful Path Computation Element (PCE)
Authors : Dhruv Dhody
Young Lee
Daniele Ceccarelli
Jongyoon Shin
Daniel King
Filename : draft-ietf-pce-stateful-hpce-15.txt
Pages : 24
Date : 2019-10-20
Abstract:
A Stateful Path Computation Element (PCE) maintains information on
the current network state received from the Path Computation Clients
(PCCs), including: computed Label Switched Path (LSPs), reserved
resources within the network, and pending path computation requests.
This information may then be considered when computing the path for a
new traffic-engineered LSP or for any associated/dependent LSPs. The
Path computation response from a PCE is helpful for the PCC to
gracefully establish the computed LSP.
The Hierarchical Path Computation Element (H-PCE) architecture
provides an architecture to allow the optimum sequence of
inter-connected domains to be selected, and network policy to be
applied if applicable, via the use of a hierarchical relationship
between PCEs.
Combining the capabilities of Stateful PCE and the Hierarchical PCE
would be advantageous. This document describes general considerations
and use cases for the deployment of Stateful, and not Stateless, PCEs
using the Hierarchical PCE architecture.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-stateful-hpce/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-pce-stateful-hpce-15
https://datatracker.ietf.org/doc/html/draft-ietf-pce-stateful-hpce-15
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-pce-stateful-hpce-15
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