Eastlake 3rd, D., Zhang, M., Ghanwani, A., Manral, V., and A. Banerjee, "Transparent Interconnection of Lots of Links (TRILL): Clarifications, Corrections, and Updates", RFC 7180, DOI 10.17487/RFC7180, May 2014, <https://www.rfc-editor.org/info/rfc7180>.