esxtop -- Output displays entries with "void"

Products

• VMware vSphere ESXi

Issue/Introduction

 

• VM is not able to ping outside of ESXi Host
• ping/vmkpings are failing with "Host is down" message
• Messages in /var/log/vobd.log indicate a physical Network Layer issue:

 

• Open SSH session to affected ESXi host. Type "esxtop" --> click on "n" (for getting the Network displayed) --> You observe that one or more TEAM-PNIC entries showing "void"
  

Cause

Physical Network Layer issue: No active uplinks in NIC teaming configuration of the port group.

Potential caused by one or more of the following: 

• Port Flapping (Check /var/log/vobd.log for 
• Issues on the physical Switch, e.g. LACP/LAG

Resolution

• Check port group configuration and make sure that there are available uplinks in active state.
• Physical network issue should be investigated by the network team who manages the physical switch connected to ESXi host.

Additional Information

Interpreting esxtop Statistics  - Section 5 Network
Failed Criteria Codes