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BFD has reached RFC status

Bidirectional Forwarding Detection (BFD) protocol has finally been published as a series of RFCs. BFD gives you quick failure detection between L3 hops (routers) regardless of the underlying technology and equipment (modems, media converters, bridges). It’s been gradually introduced in Cisco IOS during the last few years; release 15.0M and 12.2SRE contain almost everything you’ll ever need (missing: multihop BGP support and MPLS LSP support).

My “Improve the Convergence of Mission-Critical Networks with Bidirectional Forwarding Detection (BFD)IP Corner article gives you a brief overview of BFD and a typical usage scenario. To learn more, read the RFCs in this order:

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