Cisco 28XX, 38XX series Access Points issue with SG3XX, SF3XX or similar switches.

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Few cases are there that, the new Cisco Aps are able to power on through POE but the SSID is not broadcasted. The reason for this is insufficient power output from the switch. Coming to the basics a PoE switch will support a maximum of 15.4W and a PoE+ switch will support a maximum of 30W.

So, In order to get this done, you should must have a PoE+ Switch at the first place, as the power requirement for new cisco switches is 30W.

But, if even though having a PoE+ switch, you are facing issue? then configuration is the place where you need to head. By default the switches comes with a maximum output of 15W per port. You need to modify this setting to provide 30W as the maximum per port.

To configure this, you can find the settings in the GUI of the switch, port configuration.

Or you can do the same configuration via CLI:


SG300-28MP(config)#int range gi22



SG300-28MP(config-if-range)#power inline maximum 30000

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