Lesson 1 Treat the network as a utility at your own peril. Actions taken: 1. Retire legacy network gear faster and create overall life cycle management for networking gear.2. Demand review and testing of network changes before implementing.3. Document all changes, including keeping up-to-date physical and logical network diagrams.4. Make network changes only between 2 a.m. and 5 a.m. on weekends.Lesson 2 A disaster plan never addresses all the details of a disaster. Actions taken: 1. Plan team logistics such as eating and sleeping arrangements as well as shift assignments.2. Communicate realistically?even well-intentioned optimism can lead to frustration in a crisis.3. Prepare baseline, "if all else fails" backup, such as modems to query a network and a paper plan.4. Focus disaster plans on the network, not just on the integrity of data.