QuestionQ25

SR Linux Configuration and Routing

When multiple routes are learned for the same prefix, which of the following statements about selecting the best route in Nokia SR Linux is FALSE?

  • A If the same prefix is learned from two different protocols, the route from the protocol with the highest preference value is selected.
  • B If the same prefix is learned from the same protocol, the route with the lowest metric is selected.
  • C If the same prefix is learned from the same protocol with the same metric, ECMP can be used to load balance traffic over the different routes.
  • D A direct route for a prefix is always preferred over routes learned from other protocols.
Explanation

SR Linux uses the route with the lowest preference value when multiple protocols provide the same prefix; lower numerical values indicate greater preference. Therefore, a route with the highest preference value is not selected. Equal-preference routes from the same protocol use the lowest metric, and equal-cost paths can support ECMP.

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