AP 1200 Just goes down hard

Question

We have a 1200 Aironet just go down hard for no reason through out the day, we replaced the Power Injector with a C2960 POE Switch, we also replaced the cabiling. When it goes down hard all three lights are still green as if the AP is still up. We verified the IOS with other stores and everything is the same on the configurations, versions, and IOS.
Can anyone give us a suggestion on what the issue or something else we can look at that we might be over looking?
Couple more things that we have done:
We verified the IOS with other stores and everything is the same on the configurations, versions, and IOS.
Thanks in advance......

Answer 1

Hello John,
As per your query i can suggest you the following solution-
Please check the POE for the AP and whether it is proper or not.
Types of Power over Ethernet
This section describes various types of Power over Ethernet (PoE) including Cisco pre-standard power, IEEE 802.3af power, and IEEE 802.3at power.
Cisco Pre-Standard Power
The first generation of Cisco pre-standard PoE was designed to power devices such as Cisco IP phones and access points. This pre-standard solution had relatively low power requirements (approximately 6 to 7 watts). Later generations of pre-standard power supported higher power modes (up to 15 Watts) and added power negotiation via Cisco Discovery Protocol (CDP). In July 2003, the IEEE ratified the 802.1af standard (up to 15.4 watts of power). With the ratification of IEEE 802.3af, Cisco supports both IEEE 802.3af and Cisco pre-standard PoE concurrently. Cisco has also extended pre-standard power management using CDP negotiation to Cisco IEEE 802.3af compliant devices to further optimize Power Source Equipment (PSE) power management.
When using a Cisco pre-standard source for power, it is important to check the power draw in watts (Table 1) and verify that the PSE can supply enough wattage to the powered device. Depending on the version of your PSE, enough power may not be available to supply some of the newer access points.
IEEE 802.3af Power
The IEEE 802.af-2003 PoE standard:
•Defines terminology to describe a port that acts as a power source to a powered device.
•Defines how a powered device is detected.
•Defines two methods of delivering PoE to the discovered device requiring power.
•End-Point PSE—PoE-capable Ethernet port. Power may be delivered by an end-point PSE to a powered device using the active data wires of an Ethernet port or the spare wires. An end-point PSE, such as a PoE-capable Ethernet switch may implement either scheme.
•Mid-span PSE—Can be used to deliver PoE if an existing non-PoE-capable Ethernet switch is used. If a mid-span PSE is used, it can only implement power delivery over the spare pairs of the copper cabling and cannot be used to deliver PoE over 1000BASE-T connections.
Hope this will help you.