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Configuring the LDP Hello Interval

LDP hello messages enable LDP nodes to discover one another and to detect the failure of a neighbor or of the link to the neighbor. Hello messages are sent periodically on all interfaces where LDP is enabled.

By default, LDP sends hello messages every 5 seconds for link hello messages and every 15 seconds for targeted hello messages. You cannot configure a time for the LDP hello interval that is greater than the LDP hold time. For more information, see Configuring the LDP Hold Time.

To modify how often LDP sends hello packets, include the hello-interval statement:




hello-interval seconds;

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

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