1. 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

2. 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.

3. 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

4. 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;

5. Relay Node Address Stack TLV
Relayed Address format:

6. An Example: Inter-AS Scenario

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