%% You should probably cite draft-ietf-sfc-hierarchical instead of this I-D.
@techreport{dolson-sfc-hierarchical-01,
    number =    {draft-dolson-sfc-hierarchical-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-dolson-sfc-hierarchical/01/},
    author =    {David Dolson and Shunsuke Homma and Diego Lopez},
    title =     {{Hierarchical Service Chaining}},
    pagetotal = 13,
    year =      2015,
    month =     jun,
    day =       19,
    abstract =  {Hierarchical Service Function Chaining (hSFC) is a network architecture allowing an organization to compartmentalize a large- scale network into multiple domains of administration. The goals of hSFC are to make a large-scale network easier to reason about, simpler to control and to support independent functional groups within large operators.},
}