%% You should probably cite draft-ietf-idr-bgpls-sr-vtn-mt instead of this I-D.
@techreport{xie-idr-bgpls-sr-vtn-mt-01,
    number =    {draft-xie-idr-bgpls-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-idr-bgpls-sr-vtn-mt/01/},
    author =    {Chongfeng Xie and Cong Li and Jie Dong and Zhenbin Li},
    title =     {{BGP-LS with Multi-topology for Segment Routing based Virtual Transport Networks}},
    pagetotal = 9,
    year =      2020,
    month =     jul,
    day =       13,
    abstract =  {Enhanced VPN (VPN+) as defined in I-D.ietf-teas-enhanced-vpn aims to provide enhanced VPN service to support applications's needs of enhanced isolation and stringent performance requirements. VPN+ requries 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 toplogy 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-idr-bgpls-sr-enhanced-vpn defines the BGP-LS extensions to distribute the information of Segment Routing (SR) based VTNs to external entities, such as the network controllers. This document describes a simplified mechanism to distribute the information of SR based VTNs using BGP-LS with Multi-Topology.},
}