%% You should probably cite draft-ietf-lsr-isis-sr-vtn-mt instead of this I-D.
@techreport{xie-lsr-isis-sr-vtn-mt-01,
    number =    {draft-xie-lsr-isis-sr-vtn-mt-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-xie-lsr-isis-sr-vtn-mt/01/},
    author =    {Chongfeng Xie and Chenhao Ma and Jie Dong and Zhenbin Li},
    title =     {{Using IS-IS Multi-Topology (MT) for Segment Routing based Virtual Transport Network}},
    pagetotal = 7,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {Enhanced VPN (VPN+) as defined in I-D.ietf-teas-enhanced-vpn aims to provide enhanced VPN service to support some application's needs of enhanced isolation and stringent performance requirements. VPN+ requires integration between the overlay VPN and the underlay network. A Virtual Transport Network (VTN) is a virtual network which consists of a subset of the network topology and network resources allocated from the underlay network. A VTN could be used as the underlay for one or a group of VPN+ services. I-D.dong-lsr-sr-enhanced-vpn defines the IGP extensions to build a set of Segment Routing (SR) based VTNs. This document describes a simplified mechanism to build the SR based VTNs using IGP multi- topology together with other well-defined IS-IS extensions.},
}