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CiscoHow toPersonalTech solutionsTechnologyTechnology

Cisco How To Find A MAC Address By IP

From a switch that the device is plugged directly into (otherwise you’ll get the MAC of the next hop) first ping the IP address to ensure it’s in your ARP cache, then view the ARP cache, like so

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LinuxTech solutionsUbuntu

Cleaning Up Linux Headers

Make sure you’ve rebooted BEFORE running any of these commands so that you are actively using the latest kernel.

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