@techreport{ietf-roll-rnfd-07, number = {draft-ietf-roll-rnfd-07}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-roll-rnfd/07/}, author = {Konrad Iwanicki}, title = {{RNFD: Fast border router crash detection in RPL}}, pagetotal = 26, year = 2025, month = mar, day = 10, abstract = {By and large, a correct operation of a network running RPL (the IPv6 routing protocol for low-power and lossy networks) requires border routers to be up. In many applications, it is beneficial for the nodes to detect a failure of a border router as soon as possible to trigger fallback actions. This document specifies RNFD (the root node failure detector), an extension to RPL that expedites border router crash detection by having nodes collaboratively monitor the status of a given border router. The extension introduces an additional state at each node, a new type of RPL Control Message Options for synchronizing this state among different nodes, and the coordination algorithm itself.}, }