I have a few brand new Cisco 1240AG access points. They work fine if plugged directly into AC power via the adapter but if I use the power injector that goes with this model the radios will not power up. I get the following error message when connecting to the AP via HTTP.
"WARNING, All radios disabled due to insufficient inline power. Upgrade inline power source or install power injector."
I've tried other power injectors but get the same issue. My test setup is only using 6 foot CAT5 patch cables so distance shouldn't be an issue. What am I doing wrong? I am using the correct Cisco brand power injectors.
keep in mind that PoE works by tieing in the MAC of the switch port. so if you move the AP to another port, you need to switch it back to AC power first, or you'll have to console in. At least that's what I had to do.