Jain, P., Sajassi, A., Salam, S., Boutros, S., and G. Mirsky, "Label Switched Path (LSP) Ping Mechanisms for EVPN and Provider Backbone Bridging EVPN (PBB-EVPN)", RFC 9489, DOI 10.17487/RFC9489, November 2023, <https://www.rfc-editor.org/info/rfc9489>.