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VM lose network connectivity after upgrade to NSX-V 6.3.0 with ESXi 6.0.x and LACP uplink (2149210)

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After upgrading to NSX-V 6.3.0 with ESXi 6.0.x with LACP configured, virtual machines lose network connectivity.

Note: For additional symptoms and log entries, see the Additional Information section.


This issue occurs due to uplink name mismatch when doing LAG port check causing a mismatch with the VXLAN Endpoint ID and VMKNIC ID and as a result, VTEP and MAC table from host is not synced with the NSX controllers causing the outage.


This issue is resolved in VMware NSX for vSphere 6.3.1, available at VMware Downloads.

A workaround is available. To work around this issue if you are not able to upgrade, contact VMware Support and note this Knowledge Base article ID (2149210) in the problem description. To contact VMware support, see Filing a Support Request in My VMware (2006985) or How to Submit a Support Request.

Additional Information

You experience these additional symptoms:
  • Virtual machines in different VXLAN on the same ESXi host lose network connectivity.
  • Both East-West and North-South connectivity is impacted.
  • In the /var/log/vmkernel.log file of the affected ESXi host, you see entries relating to failure in getting the uplink names similar to:

    2017-02-22--14.04//var/run/log/vmkernel.log:2351:2017-02-22T13:00:32.411Z cpu4:37011 opID=27db9719)vxlan: VDL2GetlEndpointAndSetUplink:333: Failed to get uplnk device by name LACP-Net*
    2017-02-22--14.04//var/run/log/vmkernel.log:2585:2017-02-22T13:06:38.962Z cpu46:38447)vxlan: VDL2GetlEndpointAndSetUplink:333: Failed to get uplnk device by name LACP-Net*

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

See Also

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.


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