%% You should probably cite draft-zhang-pce-resource-sharing-15 instead of this revision.
@techreport{zhang-pce-resource-sharing-04,
    number =    {draft-zhang-pce-resource-sharing-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-zhang-pce-resource-sharing/04/},
    author =    {Xian Zhang and Haomian Zheng and Oscar Gonzalez de Dios and Victor Lopez},
    title =     {{Extensions to Path Computation Element Protocol (PCEP) to Support Resource Sharing-based Path Computation}},
    pagetotal = 14,
    year =      2015,
    month =     jul,
    day =       6,
    abstract =  {Resource sharing in a network means two or more Label Switched Paths (LSPs) use common piece(s) of resource along their paths. This can help save network resource and useful in scenarios such as LSP recovery or when two LSPs do not need to be active at the same time. A Path Computation Element (PCE) is a centralized entity, responsible for path computation. Given this feature and its access to the network resource information and possibly active LSPs information, it can be used to support resource-sharing-based path computation with better efficiency. This document extends the Path Computation Element Protocol (PCEP) in order to support resource sharing-based path computation.},
}