ESXi 6.0 host loses network connectivity randomly (2124669)
After installing or upgrading to ESXi 6.0, the host loses network connectivity randomly and goes to a Non Responding state.
Note: For additional symptoms and log entries, see the Additional Information section.
You experience these additional symptoms:
- In the /var/log/vmkernel.log file, there is evidence of transmit timeouts. This is often logged by the NETDEV WATCHDOG service in ESXi. You may see entries similar to:
YYYY-MM-DDT21:35:34.007Z cpu0:33245)WARNING: LinNet: netdev_watchdog:3678: NETDEV WATCHDOG: vmnic0: transmit timed out
YYYY-MM-DDT21:35:34.007Z cpu0:33245)WARNING: at vmkdrivers/src_92/vmklinux_92/vmware/linux_net.c:3707/netdev_watchdog() (inside vmklinux)
Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.
- This issue can impact multiple network adapter types across multiple hardware vendors. The exact logging that occurs during a transmit timeout may vary from card to card.