The September IP Corner article, Increase the Stability of your Network, describes the IP Event Dampening, an IOS feature that allows you to disable a flapping interface that continuously disrupts your routing protocol. As always, I went a step beyond that and tested how you can use the Embedded Event Manager to track other network instabilities (for example, a failing OSPF neighbor) and react to them.
Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.