Label Switched Path (LSP) Ping and Traceroute Reply Mode Simplification (RFC7737)
Original Publication Date: 2016-Jan-01
Included in the Prior Art Database: 2016-Feb-08
Internet Society Requests For Comment (RFCs)
N. Akiya: AUTHOR [+5]
Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping, as described in [RFC4379], allows an initiator Label Switching Router (LSR) to encode instructions (Reply Mode) on how a responder LSR should send the response back to the initiator LSR. [RFC7110] also allows the initiator LSR to encode a TLV (Reply Path TLV) that can instruct the responder LSR to use a specific LSP to send the response back to the initiator LSR. Both approaches are powerful, as they provide the ability for the initiator LSR to control the return path.
Internet Engineering Task Force (IETF) N. Akiya Request for Comments: 7737 Big Switch Networks Updates: 7110 G. Swallow Category: Standards Track C. Pignataro ISSN: 2070-1721 Cisco Systems L. Andersson M. Chen Huawei January 2016
Label Switched Path (LSP) Ping and Traceroute Reply Mode Simplification
The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute use the Reply Mode field to signal the method to be used in the MPLS echo reply. This document updates the procedures for the "Reply via Specified Path" Reply Mode. The value of this Reply Mode is 5. The update creates a simple way to indicate that the reverse LSP should be used as the return path. This document also adds an optional TLV that can carry an ordered list of Reply Mode values.
This document updates RFC 7110.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7737.
Akiya, et al. Standards Track [Page 1]
RFC 7737 LSP Ping Reply Mode Simplification January 2016
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