I bought a Cisco WAP121 and a Cisco AIR-PWRINJ3 so I could use the PoE from the AIR-PWRINJ3 to power the WAP121. Unfortunately the setup is not working, the WAP121 shows no sign of getting power even though the AIR-PWRINJ3 indicates it has power. Is this setup just not supported or do I have defective parts?
It is my understanding the AIR-PWRINJ3 is not 802.3af compatible, but rather compatible with the Cisco pre-standard POE. This is why it works with the phones and other Cisco APs which support that version of POE, but not the WAP121 which is only 802.3af POE capable only.