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A new Link Monitor is created for each interface that is configured for link verification. The Link Monitor is provided with a destination to use for link verification as well as the Link Detection Group to which it belongs. The Link Monitor is responsible for pinging that destination, processing responses and determining when the interface should be considered failed. It reports such failures to its Link Detection Group. You must As a best practice, configure link monitors for the active and standby SBC with different destinations , to avoid a failure scenario where the active and standby SBC fail back and forth due to link detection failures caused by loss of communication with a single destination. The active and standby SBC should be connected to different physical hardware (that is, switches) to avoid a single point of failure.

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