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Troubleshooting when a virtual machine loses network connection after vMotion

Symptoms

  • After migrating a virtual machine with vMotion, you experience these symptoms:

    • The virtual machine loses its network connection
    • There is no network connectivity to or from a single virtual machine
    • A TCP/IP connection fails to and from a single virtual machine

Purpose

This article provides troubleshooting steps for a single virtual machine that loses its network connection after it has been vMotioned.  

Resolution

Validate that each troubleshooting step below is true for your environment. Each step provides instructions or a link to a document, in order to eliminate possible causes and take corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. Please do not skip a step.

  1. Verify physical network connectivity. From the virtual machine,ping different sources to identify where the issue may be.

  2. Verify the physical switch setup. For more information, see Loss of network connectivity when port security is configured on the physical switch (1002811).

  3. Verify that the correct version of VMware Tools is installed. For more information, see Verify VMware tools build version (1003947).

  4. If the above steps do not resolve the issue and you are experiencing a complete lack of network connectivity from a particular virtual machine, see Virtual Machine has no network connectivity (1003893).

  5. If you are experiencing network connectivity issues with the ESX host or with multiple virtual machines,see ESX/ESXi host has intermittent or no network connectivity (1004109).

If your problem still exists after trying the steps in this article:

Tags

no-access-to-external-network  no-network-vmotion  virtual-network-not-available  vm-network-change  virtual-machine-networking

See Also

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