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Configuring Preference Values for LSPs
As an option, you can configure multiple LSPs between the same pair of ingress and egress routers. This is useful for balancing the load among the LSPs because all LSPs, by default, have the same preference level. To prefer one LSP over another, set different preference levels for individual LSPs. The LSP with the lowest preference value is used. The default preference for RSVP LSPs is 7 and for LDP LSPs is 9. These preference values are lower (more preferred) than all learned routes except direct interface routes.
To change the default preference value, include the preference statement:
preference preference;
For a list of hierarchy levels at which you can include this statement, see the statement summary section for this statement.
