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Cisco Aironet 1240AG Series Access Point Hardware Installation Guide
OL-8371-05
Chapter3 Troubleshooting 1240AG Series Autonomous Access Points
Low Power Condition
Caution If the access point receives power through PoE, the output current of the power sourcing equipment
(PSE) cannot exceed 400 mA per port. The power source must comply with IEEE802.3af or IEC60950
for limited power sources.
Note After completing your configuration changes, you must remove the serial console cable from the access
point.
Issuing the Cisco IOS Command Using the CLI
Follow these steps to issue the Cisco IOS command for your power scenario:
Step1 Connect a PC to the access point console port and use a terminal emulator to establish a session with the
access point (refer to the “Connecting to the Access Point Locally” section on page3-20).
Step2 From the global configuration mode (refer to the Cisco IOS Software Configuration Guide for Cisco
Aironet Access Points), enter the command below that applies to your power configuration (see
Table 3 -2):
•power inline negotiation injector installed
•no power inline negotiation injector
•power inline negotiation prestandard source
•no power inline negotiation prestandard source
Table3-2 Using Cisco IOS Commands
Power Source
Cisco IOS Commands
Access Point Cisco Switch
AC power module None required power inline never
Cisco switch that supports Intelligent Power
Management1
1. You should check the release notes for your Cisco power source to determine which Cisco IOS release supports Intelligent Power Management. Support
for Intelligent Power Management might not be currently available for your Cisco power source.
no power inline negotiation prestandard source
no power inline negotiation injector
power inline auto
Cisco switch that does not support Intelligent
Power Management1
power inline negotiation prestandard source
no power inline negotiation injector
power inline auto
Power injector2 used with a Cisco switch that
supports Intelligent Power Management1
2. Power injector must be AIR-PWRINJ3 or AIR-PWRINJ-FIB.
None required3
3. The Cisco switch uses Intelligent Power Management to inform the access point of the power injector being used.
power inline never4
4. Cisco switches that support Intelligent Power Management always configure the use of a power injector at the switch.
Power injector2 used with a Cisco switch that
does not support Intelligent Power
Management1
no power inline negotiation prestandard source
power inline negotiation injector installed
power inline never
Power injector used with a non-Cisco switch None required –
802.3af compliant non-Cisco switches None required –