@misc{rfc9355,
    series =    {Request for Comments},
    number =    9355,
    howpublished =  {RFC 9355},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC9355},
    url =       {https://www.rfc-editor.org/info/rfc9355},
    author =    {Ketan Talaulikar and Peter Psenak and Albert Fu and Rajesh Shetty},
    title =     {{OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode}},
    pagetotal = 10,
    year =      2023,
    month =     feb,
    abstract =  {This document specifies the extensions to OSPF that enable an OSPF router to signal the requirement for a Bidirectional Forwarding Detection (BFD) session prior to adjacency formation. Link-Local Signaling (LLS) is used to advertise the requirement for strict-mode BFD session establishment for an OSPF adjacency. If both OSPF neighbors advertise BFD strict-mode, adjacency formation will be blocked until a BFD session has been successfully established. This document updates RFC 2328 by augmenting the OSPF neighbor state machine with a check for BFD session up before progression from Init to 2-Way state when operating in OSPF BFD strict-mode.},
}