I remember using a command line tool to flash a NIC's link light to identify it. I can't remember for the life of me what it was.
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Yeah it was ethtool I was looking for but specifically this will flash the link light for two minutes:
ethtool -p eth0 120
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rjmoggach
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it will blink activity led ( orange) or link light (green)? – Alok Prasad Jul 09 '20 at 10:40
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may vary based on NIC but for the ones I tested it flashed the link light – rjmoggach May 26 '22 at 17:18
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Ethtool also works with vmware ESXi with -p parameter:
Example: ethtool -p vmnic0 15
vmnic0 will blink for 15 seconds
Here is a video that shows how it works (at 2:50 shows blink):
http://www.sysadmit.com/2017/06/vmware-esxi-vmnic-nic-fisica.html
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Roger Murtaugh
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