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Title : A set of monitoring tools for Path Computation Element based Architecture
Author(s) : J. Vasseur
Filename : draft-vasseur-pce-monitoring-03.txt
Pages : 20
Date : 2007-5-11
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 is referred to as a collection of
network elements within a common sphere of address management or path
computational responsibility such as IGP areas and Autonomous
Systems). 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, 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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