OSPF Route Filtering

ccie r/s ccnp r/s Nov 14, 2017
 

Let's say you have one or more IP routes that you don't want appearing in a router's IP routing table. The reason might be for security or for router performance, as a couple of examples. With OSPF, there are three primary ways to accomplish this route filtering:

  • Filter a route coming in from another autonomous system, as part of a redistribution configuration.
  • Filter a route between areas, using a filter list.
  • Filter a route from being installed in an single router's IP routing table, using a distribute list.

This video discusses these three approaches, and it demonstrates the configuration of two of these approaches (because redistribution is a topic unto itself).

Enjoy the video!

Kevin Wallace, CCIEx2 (R/S and Collaboration) #7945

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