Relayed Echo Reply Mechanism for Label Switched Path Ping
RFC 7743, “Relayed Echo Reply Mechanism for Label Switched Path Ping”, is a Proposed Standard document published in January 2016 by J. Luo, L. Jin, T. Nadeau, G. Swallow. It updates RFC 4379. The canonical text is published by the RFC Editor.
Abstract
In some inter-AS (Autonomous System) and inter-area deployment scenarios for RFC 4379 ("Label Switched Path (LSP) Ping and Traceroute"), a replying Label Switching Router (LSR) may not have the available route to an initiator, and the Echo Reply message sent to the initiator would be discarded, resulting in false negatives or a complete failure of operation of the LSP Ping and Traceroute. This document describes extensions to the LSP Ping mechanism to enable the replying LSR to have the capability to relay the Echo Response by a set of routable intermediate nodes to the initiator. This document updates RFC 4379.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7743 is hosted at rfc-editor.org. Available in TXT,HTML.
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