![]() ![]() The latter though is a little more difficult. The first two things can be accomplish using a laptop and a basic cable tester. It is up to the technician to troubleshoot whether there is a configuration problem in the switch, a cable issue, or if power is being sent at all. It may be that the line is simply not providing enough juice to light up the device. ![]() However, just because a device doesn’t light up doesn’t mean that PoE is disabled or not working at all. If they don’t see lights, they conclude that PoE doesn’t work and jump onto the switch configuration. If they see lights they move on to the next connection. In most environments, technicians “test” PoE by connecting a phone or an AP. What happens though when there is a problem with PoE? Is the power being sent to a given port enough to properly power a variety of end devices with different voltage requirements? Shouldn’t we test it just like we do the network before we connect devices that support business critical applications and services? If we connect a phone, access point, security camera, card scanner or other PoE-enabled devices to a port that supports power, we expect to see lights and activity. PoE has become such a commonplace technology that it is easy to take for granted. Test it before connecting that end device! ![]()
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