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How to Determine from CLI what switch port a give mac is connected too

I sometimes want to find out which physical port number a given mac address is connected on to say turn on port fast or the span feature , I havent found a good quick way to do this, show arp just shows mappings not what physical port that that mac/ip combo is coming in on , is their a command or tool for this ... Thanks

  • Other Network Infrastructure Subjects
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Cisco Employee

Re: How to Determine from CLI what switch port a give mac is con

What platform and what software version?

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