Aissaoui, M., Busschbach, P., Martini, L., Morrow, M., Nadeau, T., and Y(J). Stein, "Pseudowire (PW) Operations, Administration, and Maintenance (OAM) Message Mapping", RFC 6310, DOI 10.17487/RFC6310, July 2011, <https://www.rfc-editor.org/info/rfc6310>.