%% You should probably cite draft-ietf-isis-encapsulation-cap instead of this I-D.
@techreport{xu-isis-encapsulation-cap-03,
    number =    {draft-xu-isis-encapsulation-cap-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xu-isis-encapsulation-cap/03/},
    author =    {Xiaohu Xu and Robert Raszuk and Uma Chunduri and Luis M. Contreras},
    title =     {{Advertising Encapsulation Capability Using IS-IS}},
    pagetotal = 5,
    year =      2015,
    month =     feb,
    day =       28,
    abstract =  {In a particular network environment where MPLS-SPRING-enabled routers are partially deployed, it needs to transport MPLS traffic through an IP-based tunnel between two MPLS-SPRING-enabled routers so as to traverse non-MPLS routers. The ingress of the IP-based tunnel must know which encapsulation type is supported by the egress of that IP- based tunnel.This document describes how to advertise the encapsulation capability of MPLS-SPRING-enabled routers using IS-IS. Note that this encapsulation capablity advertisment may be applicalbe to other use cases as well.},
}