Vsphere distributed switch out of sync autobiography download

Today when I booted my lab I saw some issues with one of the host and the summary page of host was showing the below error. When we install distributed switch and add hosts to the vDS a hidden switch is created on all hosts and a copy of vDS database is copied to each host with information on the switch. This database is synched every 5 minutes.

So if ever vCenter Server is down it will not affect the VM traffic on the host and you will only loose management capabilities. Selecting the vDS and navigating to host tab will show you a warning under VDS status that your host is out of sync. No need to panic here. By default the vDS database is synched on all hosts every 5 minutes. If it is not happening you can trigger a force resync.

Vmware distributed switch vs standard switch

Again it will not show you the desired result immediately and you have to wait for 5 minutes. In my lab it took some good 10 minutes for out of sync warning to disappear. I hope this post is informational to you.