Wireless network problems can happen on the fly, but figuring out what went wrong and devising a solution is often a long, difficult process, Vaduvur Bharghavan writes. IT managers must learn to spot possible problems before they happen, and track the system's history carefully so trouble spots can be found quickly, he writes. As a network expands, human skill is insufficient, so tools that let the network analyze its data and point out latent issues are critical, Bharghavan writes.

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