Search the VMware Knowledge Base (KB)
View by Article ID

vSphere Web Client displays alerts for network partitions of a vSAN cluster (2109242)

  • 0 Ratings


This knowledge base article explains why you might see network partitions for a vSAN cluster, but you cannot find any relevant error messages for what causes the network partitions.

If you create a vSAN cluster for which you configure the hosts to use only multicast connectivity, the cluster is created temporarily, and all the hosts in the cluster are put in one network partition. If one of the hosts from the cluster drops out from the vSAN cluster, the vSphere Web Client might start displaying alerts for network partitions. 
This issue occurs because the host attempts to automatically rejoin the vSAN cluster but fails because the unicast connection is shut down. After a few such unsuccessful attempts, the process the host to reconnect to the cluster times out. The vSphere Web Client does not display any alerts for the host trying to reconnect to the vSAN cluster, hence you cannot understand what caused the alerts for the network partitions. 


To avoid this issue, make sure that the hosts from a vSAN cluster are able to use both multicast and unicast connectivity.

For more information on how to troubleshoot the networking settings of a vSAN cluster, see Virtual SAN Troubleshooting: Multicast.

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.


  • 0 Ratings

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.

What can we do to improve this information? (4000 or fewer characters)

Please enter the Captcha code before clicking Submit.
  • 0 Ratings