A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Path Computation Element Working Group of the IETF.
Title : A set of monitoring tools for Path Computation Element based Architecture
Author(s) : J. Vasseur, et al.
Filename : draft-ietf-pce-monitoring-04.txt
Pages : 25
Date : 2009-01-20
A Path Computation Element (PCE) based architecture has been
specified for the computation of Traffic Engineering (TE) Label
Switched Paths (LSPs) in Multiprotocol Label Switching (MPLS) and
Generalized MPLS (GMPLS) networks in the context of single or
multiple domains (where a domain refers to a collection of network
elements within a common sphere of address management or path
computational responsibility such as IGP areas and Autonomous
Systems). Path Computation Clients (PCCs) send computation requests
to PCEs, and these may forward the requests to and cooperate with
other PCEs forming a "path computation chain". In PCE-based
environments, it is thus critical to monitor the state of the path
computation chain for troubleshooting and performance monitoring
purposes: liveness of each element (PCE) involved in the PCE chain,
detection of potential resource contention states and statistics in
term of path computation times are examples of such metrics of
interest. This document specifies procedures and extensions to the
Path Computation Element Protocol (PCEP) in order to gather such
information.
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