%% You should probably cite rfc8007 instead of this I-D.
@techreport{ietf-cdni-control-triggers-15,
    number =    {draft-ietf-cdni-control-triggers-15},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-cdni-control-triggers/15/},
    author =    {Rob Murray and Ben Niven-Jenkins},
    title =     {{Content Delivery Network Interconnection (CDNI) Control Interface / Triggers}},
    pagetotal = 49,
    year =      2016,
    month =     may,
    day =       19,
    abstract =  {This document describes the part of the Content Delivery Network Interconnection (CDNI) Control interface that allows a CDN to trigger activity in an interconnected CDN that is configured to deliver content on its behalf. The upstream CDN can use this mechanism to request that the downstream CDN pre-position metadata or content or to request that it invalidate or purge metadata or content. The upstream CDN can monitor the status of activity that it has triggered in the downstream CDN.},
}