@techreport{huangshg-pce-crank-back-routing-00,
    number =    {draft-huangshg-pce-crank-back-routing-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-huangshg-pce-crank-back-routing/00/},
    author =    {Dajiang Wang and Xihua Fu and Wanyi Gu and Shanguo Huang},
    title =     {{Extensions to the Path Computation Element Communication Protocol(PCEP) for Crank-back Routing}},
    pagetotal = 12,
    year =      2010,
    month =     oct,
    day =       18,
    abstract =  {Path computation in large multi-layer and multi-region networks is complex and may require special computational components and cooperation between different network domains, whereby a failure affect to establish a path or a failure of an existing path may be corrected by a new path computation and fresh signaling. This document specifies the crank-back routing mechanism based on re- routing in crank back Path Computation Element (PCE). When a Path Computation Client (PCC) requests a PCE for a route, it may be useful for the PCC to specify Crank-back routing to the path computation, abstract nodes, resources, and domains that are to be explicitly excluded from the computed route. Such mechanism is termed Crank- back routing. The PCE Communication Protocol (PCEP) is designed as a communication protocol between PCCs and PCEs. To support this mechanism, function of PCE and procedure of PCEP signaling performance are extended.},
}