%% You should probably cite draft-li-bess-mvpn-role-state-ad instead of this I-D.
@techreport{li-l3vpn-mvpn-role-state-ad-02,
    number =    {draft-li-l3vpn-mvpn-role-state-ad-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-li-l3vpn-mvpn-role-state-ad/02/},
    author =    {Zhenbin Li and Hui Ni},
    title =     {{Role-Based State Advertisement for Multicast in MPLS/BGP IP VPNs}},
    pagetotal = 8,
    year =      2014,
    month =     jul,
    day =       3,
    abstract =  {The document defines a new type of Intra-AS I-PMSI A-D route to advertise the role and corresponding primary/backup state for Multicast in MPLS/BGP IP VPNs. The role-based state advertisement can help optimization of process in MPLS/BGP Multicast VPN to reduce unnecessary traffic replication and facilitate service provision.},
}