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Configuring BFD for OSPF
Applicable Environment
Fault detection, whereby an OSPF-capable switch periodically sends Hello packets to a neighboring switch, requires more than 1s. For services such as voice and video, which are sensitive to packet loss and delay, prolonged fault detection will cause packet loss when traffic is transmitted at gigabit rates. This detection period cannot meet the high reliability requirements of carrier-class networks.
BFD for OSPF resolves this problem. After BFD for OSPF is configured in a process or on an interface, the link status is rapidly detected. This allows fault detection to complete in milliseconds, speeding up OSPF convergence.
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