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Configuring the Valid Lifetime

The valid lifetime for the prefixes in the router advertisement messages specifies how long the prefix remains valid for onlink determination. By default, the valid lifetime is set to 2,592,000 seconds.

To configure the valid lifetime, include the valid-lifetime statement:




valid-lifetime seconds;

For a list of hierarchy levels at which you can configure this statement, see the statement summary section for this statement.

If you set the valid lifetime to 0xffffffff, the lifetime is infinite.

The valid lifetime value must never be smaller than the preferred lifetime value.

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