Given the brief overview of redistribution, take a moment and consider when you might encounter redistribution or have a need to implement it. Many people have given lists of when you would use redistribution, but in reality, you need to know just four categories:
Politics— A decision-maker has forced the running of another protocol besides OSPF. Work on this person—who needs to see the benefits of OSPF; however, until the decision is changed, you must use redistribution.
Profit— Perhaps, there has been a merger of two companies with different protocols, or different needs exist within different divisions of the same company and network and the network cannot afford to be without connectivity, so you are called upon to “make ...