ESXi – set vmnic back to autonegotiating

Useful when you lost access if you forcibly set speed duplex for vmnic instead of recommended by ESXi which doesn’t support manually set speed duplex because of bad RJ-45 cable type or switch.

  • Open ESXi console, press F2 and enter root credentials
  • Open Troubleshooting Options > Enable ESXi Shell
  • Press ALT+F1 to enter ESXi Shell
  • Enter root credentials and list all vmnic and enable Autonegotiating byt switch -a, after set vmnic UP

  • To enter back ESXi console press ALT+F2
  • TIP: you can look into vmkernel.log and search for Uplink keyword when you have some problem with vmnic.

Leave a Comment

NOTE - You can use these HTML tags and attributes:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code class="" title="" data-url=""> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> <pre class="" title="" data-url=""> <span class="" title="" data-url="">

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: