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- Return Path Specified Label Switched Path (LSP) PingMach (Guoyi) Chen, Wei Cao, So Ning, Frederic Jounay, Simon Delord. rfc, 7110:1-21, January 2014. [doi]
- Updating the MPLS Label Switched Paths (LSPs) Ping Parameters IANA RegistryLoa Andersson, Mach (Guoyi) Chen, Carlos Pignataro, Tarek Saad. rfc, 9041:1-31, July 2021. [doi]
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