Cisco AIR-AP1252AG-A-K9 Hardware Installation Guide - Page 75
Configuring Power Using the CLI, power inline negotiation
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Chapter 3 Troubleshooting 1250 Series Autonomous Access Points Low Power Condition on Autonomous Access Points Configuring Power Using the CLI Intelligent Power Management support is dependent on the version of software resident in the Cisco switch that is providing power to the access point. Each Cisco switch should be upgraded to support Intelligent Power Management. Until the software is upgraded, you can configure the access point to operate with older switch software using the following Cisco IOS CLI command: [no] power inline negotiation {prestandard source |injector {installed | override | H.H.H}} Where: • prestandard source indicates the Cisco switch does not support Intelligent Power Management. • injector installed indicates a power injector is installed on the current switch port. Note The power inline negotiation injector installed command is not required, because the access point can detect the 1250 power injector (AIR-PWRINGJ4). • injector override indicates a power injector is installed and the access point is configured to override the inline power checks. When you move the access point, H.H.H is used to specify the MAC address of the new switch port where the access point was moved. A MAC address of 0.0.0 is invalid. Caution When you are using the power inline negotiation injector override command, a power injector must always be installed to prevent a possible overload condition with an underpowered power source. Note The power inline negotiation injector installed command will fail if CDP is disabled. When using the power inline negotiation injector override command, you must use a power injector to prevent possibly overloading underpowered power sources. You can use this Cisco IOS CLI command to inform the access point of the following: • The Cisco switch does not support Intelligent Power Management but should be able to supply sufficient power for the access point with one radio module installed. • A 1250 power injector is being used to supply sufficient power and the Cisco switch does not support Intelligent Power Management. • The access point was moved to a new Cisco switch port and a 1250 power injector is being used to supply sufficient power. Caution If the access point receives power through PoE, the output current of the power sourcing equipment (PSE) cannot exceed 400 mA per port. Note After completing your configuration changes, you must remove the serial console cable from the access point. OL-8247-03 Cisco Aironet 1250 Series Access Point Hardware Installation Guide 3-11