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Power-On Options for the AP21

You can use any of the following options to power on an AP21:

  • Power over Ethernet (PoE) from an Ethernet switch.

    We recommend that you use an Ethernet cable with a maximum length of 100 m to connect the AP to the switch port.

    If you use an Ethernet cable that is longer than 100 m by placing an Ethernet PoE extender in the path, the AP might power up, but the Ethernet link does not transmit data across such a long cable. You might see the status LED blink yellow twice. This LED behavior indicates that the AP is unable to receive data from the switch.

  • PoE injector

  • 12 VDC power supply

See PoE Requirements for Juniper Mist APs for the power requirements for an AP21.