%% You should probably cite draft-ietf-pce-inter-layer-frwk instead of this I-D.
@techreport{oki-pce-inter-layer-frwk-00,
    number =    {draft-oki-pce-inter-layer-frwk-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-oki-pce-inter-layer-frwk/00/},
    author =    {Eiji Oki},
    title =     {{Framework for PCE-Based Inter-Layer MPLS and GMPLS Traffic Engineering}},
    pagetotal = 1,
    year =      2006,
    month =     apr,
    day =       5,
    abstract =  {A network may comprise of multiple layers. It is important to globally optimize network resources utilization, taking into account all layers, rather than optimizing resource utilization at each layer independently. This allows better network efficiency to be achieved through a process that we call inter-layer traffic engineering. The Path Computation Element (PCE) can be a powerful tool to achieve inter-layer traffic engineering. This document describes a framework for the PCE-based path computation architecture to inter-layer MPLS and GMPLS traffic engineering. It provides suggestions for the deployment of PCE in support of multi-layer networks. This document also describes network models where PCE performs inter-layer traffic engineering, and the relationship between PCE and a functional component called the Virtual Network Topology Manager (VNTM).},
}