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Published on May 22, 2012
This video takes a look at a NerveCenter basic device monitoring model and explains how even at the most fundamental monitoring level, NerveCenter approaches network monitoring in a more thorough way. All management systems do some form of basic device monitoring, typically a simple up/down status check. Most other management platforms verify up/down status through a simple connectivity test by using ICMP pings to send out an echo request, and listening for an echo reply. Consider this scenario: Is there a set of network conditions where I could send an echo request and not get a reply, but the device I'm trying to reach is actually functioning properly? The answer is yes. The device could have a router in front of it that's the real problem, causing the pings to not get there. You are getting a false negative. Testing connectivity is obviously an important part of monitoring a device, but as this video shows, it should not be your only criteria