Ryan Zheng Lizhong Jin Thomas Nadeau George Swallow Echo Relay Reply mechanism for LSP Ping draft-zjns-mpls-lsp-ping-relay-reply-00 Ryan Zheng Lizhong Jin Thomas Nadeau George Swallow IETF 84 - Vancouver

Motivation Inter-AS scenario: Discard Echo request LSP Inter-area scenario in Seamless MPLS: Echo request Discard LSP P nodes would be unable to respond for the lack of IP reachable route to Initiator.

Background draft-zjns-mpls-lsp-ping-relay-reply-00 draft-ietf-mpls-interas-lspping-00 Only for Inter-AS Scenario draft-zj-mpls-lsp-ping-reply-relay-00 Mainly focused on Inter-Area Scenario Merged draft-zjns-mpls-lsp-ping-relay-reply-00 A generic solution

LSP Ping Relay Reply Mechanism Protocol Extensions for MPLS LSP Ping New Message type: MPLS Echo Relay Reply message New TLV: Relay Node Address Stack TLV Basic procedures Echo Relay Reply: both Src & Des UDP Ports are 3503;

Relay Node Address Stack TLV Relayed Address format:

An Example: Inter-AS Scenario

Next Steps Seek feedback from WG Ask for WG Adoption Questions? IETF 84 - Vancouver