See here:
http://www.cisco.com/c/en/us/td/docs/ios/iproute_pi/command/reference/iri_book/iri_pi1.html#wp1011620
half-life-period | (optional) Time (in seconds) after which a penalty is decreased. Once the route has been assigned a penalty, the penalty is decreased by half after the half-life period expires. The range of the half-life period is from 1 to
30 seconds. The default time is 5 seconds. |
reuse-threshold | (optional) Reuse value based on the number of penalties. When the accumulated penalty decreases enough to fall below this value, the route is unsuppressed. The range of the reuse value is from 1 to 20000; the default is 1000. |
suppress-threshold | (optional) Value of the accumulated penalty that triggers the router to dampen a flapping interface.A route is suppressed when its penalty exceeds this limit. The range is from 1 to 20000; the default is 2000. |
max-suppress-time | (optional) Maximum time (in seconds) a route can be suppressed. The range is from 1 to 20000; the default is four times the half-life-period value. If the half-life-period value is allowed to default, the maximum suppress time defaults to 20 seconds. |
restart-penalty | (optional) Penalty to applied to the interface when it comes up for the first time after the router reloads. The configurable range is from 1 to 20000 penalties. The default is 2000 penalties. This argument is not required for any other configurations. |
hth.
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