%% You should probably cite draft-ietf-bess-bgp-sdwan-usage instead of this I-D.
@techreport{dunbar-bess-bgp-sdwan-usage-00,
    number =    {draft-dunbar-bess-bgp-sdwan-usage-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-dunbar-bess-bgp-sdwan-usage/00/},
    author =    {Linda Dunbar and Jim Guichard and Ali Sajassi and John Drake},
    title =     {{BGP Usage for SDWAN Overlay Networks}},
    pagetotal = 25,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    abstract =  {The document describes three distinct SDWAN scenarios and discusses the applicability of BGP for each of those scenarios. The goal of the document is to make it easier for future SDWAN control plane protocols discussion. SDWAN edge nodes are commonly interconnected by multiple underlay networks that are owned and managed by different network providers. A BGP-based control plane is chosen for handling large number of SDWAN edge nodes with little manual intervention.},
}