In the past, we've written about the device inventory techniques. I've spoken about device configuration management. Here's a video of my talk on the subject. Eric Lavoie, another member of our senior staff, spoke to me recently about needing to make a small change on 81 voice gateways. He was shocked by my casual estimate of the amount of time required to write the code to collect, validate, and correct the configuration. He went back to his desk, convinced there was an easier way to make the change, and he found one!