As the title said, I do not make the difference between port-channel and etherchannel. For me they both aggregate ports in an Ethernet networks using Cisco parlance.
What subtlety do I miss ?
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Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you can provide and accept your own answer. – Ron Maupin♦ Dec 25 '18 at 9:56
"EtherChannel" or "Link Aggregation" is the particular technology that allows you to bundle several links between two devices and use them simultaneously as a single interface.
"Port-channel" is the name of this virtual interface in IOS. This is similar to, say, WiFi as a technology, and "Dot11Radio0" as the name of the interface, or ISDN as a technology, and BRI as an interface name.
There can be similarities in the actual command used on Cisco IOS or Nexus NX-OS to show a summarized list of Port-channels, for instance, on IOS the command is:
show etherchannel summary
Where on NX-OS, the command is:
show port-channel summary
