Question 450
At a distribution company in Oslo, a post-change check targets this documented issue: Traffic toward a redistributed external prefix should account for internal path cost, but all paths are evaluated only on the external metric. Which observation is the strongest evidence that the repair worked?
Explanation
Correct Answer
This is the observable outcome for ospf e1 versus e2 metric type. It tests whether the targeted change, 'Select OSPF external type 1 where adding internal path cost to the external cost is required', actually resolved the reported issue at a distribution company in Oslo. The original failure was: Traffic toward a redistributed external prefix should account for internal path cost, but all paths are evaluated only on the external metric.
Incorrect Answers
That observation verifies ospf external subnets redistribution in a different situation, such as when a redistribution statement is intended to carry multiple classless subnets into OSPF but only classful behavior is observed in the configured IOS context. For the reported ospf e1 versus e2 metric type incident at a distribution company in Oslo, the required acceptance evidence is: External type 1 route cost reflects both the external metric and intra-OSPF distance to the ASBR. This other result does not test that condition directly.
That observation verifies redistribution route-map omission in a different situation, such as when a router leaks sensitive static prefixes into OSPF because redistribute static has no route policy. For the reported ospf e1 versus e2 metric type incident at a distribution company in Oslo, the required acceptance evidence is: External type 1 route cost reflects both the external metric and intra-OSPF distance to the ASBR. This other result does not test that condition directly.
That observation verifies ospf default originate conditional in a different situation, such as when the border router should originate an OSPF default only while it has a usable upstream default but neighbors receive none. For the reported ospf e1 versus e2 metric type incident at a distribution company in Oslo, the required acceptance evidence is: External type 1 route cost reflects both the external metric and intra-OSPF distance to the ASBR. This other result does not test that condition directly.