Cisco C2960CX managed switch - Won't provide POE

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  • fuxxy
    Badcaps Veteran
    • Jan 2013
    • 318
    • USA
    #1

    Cisco C2960CX managed switch - Won't provide POE

    Hey guys, I have 4 of these switches.

    One switch works as intended - Boots, Accepts configuration, Provides POE. However, after about 3 days the switch stops responding. Won't recognize console USB cable inserted, TX/RX lights stay lit when cables unplugged. Works again after power cycle.

    The other three will boot, accept configuration, and will uplink to the network. However they won't provide power to connected POE devices. I've ruled out configuration issue, as I have cloned the configuration from the 'working' switch to all 3 of these non-working switches.

    I'm at a loss for where to look, since the 802.1at POE standard has a couple different ways a switch can discover and supply power to a POE-capable client device.

    Does anyone have access to a schematic or block diagram for ANY recent Cisco POE-enabled switch?
    Tags: None
    • ant3202
      Badcaps Veteran
      • Jun 2006
      • 274
      • Singapore
      #2
      Re: Cisco C2960CX managed switch - Won't provide POE

      open up the switch and take some pictures and share with us.

      based on some switch poe c3750 poe troubleshooting, inspect the poe ic chips for any blown components.

      sometimes lightning can bring the fuse down

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