PoE Defined and How to Avoid Common Issues
Today, PoE is powering many mission critical devices, including VoIP systems, Wi-Fi networks, surveillance systems, alarm systems, IoT devices, etc. In many cases, PoE is tested during deployment by simply plugging in an AP or phone and determining if the LED’s came on. The problem with this method is it does not consider infrastructure issues. Most of which could be avoided and resolved before the network becomes active.
Some of the most common PoE issues include:
i. Cable Type is incorrect 802.3bt requires at least CAT5E
ii. Bad Cabling (Opens, Shorts, Split Pair, Crossed, etc.)
iii. Misconfigured PSE (Power Sourcing Equipment) i.e. Switch
iv. Incompatible technologies
v. Vendor specific vs. standards compliant
vi. PSE PoE budget limitations many PSE’s have a limit on how much power they can provide
vii. These issues can all be eliminated during rollout of the PoE network. Various tools can help resolve these issues and headaches before they even become an issue.