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Enables outage-detection, the ability to detect when a previously asserted link is no longer able to provide coverage for a prefix.
outage-detection on no outage-detection on
Must be in engine or policy configuration mode (config-engine or config-engine-policy), which requires privileged-level access.
CNA keeps track of the time intervals between HRTT measurements for each prefix, through each service provider link. Whenever the device detects an unacceptable increase in this interval when measured against a rolling-average of intervals, the link will be considered no longer able to serve that prefix.
See the outage-detection silence command for information about unacceptable intervals.
When configured from engine mode, the command is applied globally, to all prefixes.
When configured from policy mode, the command is applied only to those prefixes which are associated with the policy.
If the link on which an outage is detected is the current winner for the prefix, CNA will recompute the performance route.
If the link is the route that has been selected by natural BGP, the link will remain in the winner set from which the new performance route is selected, unless the outage-detection always-move-from-bgp command has been enabled (it is disabled by default). Otherwise, the invalidated link will be removed from the winner set.
Use the no form of the outage detection on command to disable outage-detection.
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