network connectivity issues with vmware

Hi Experts,

I am running two virtual machines on ESXi 6. One of them is running Windows Server 2008 R2 which is our domain controller. The second machine is a fresh install of windows server 2012 R2. When i was installing the OS second virtual machine (2012), i lost connectivity to my domain controller. I was not able to remote in, tried to ping and after every three replied there was a request timed out. It even kicked me out of vSphere client. After the installation was completed, things were back to normal. And i had connectivity to both the machines.

This morning, it started happening again, i lost the connectivity to my domain controller for few minutes. I had to shutdown my second virtual machine (2012) to make things run smooth.

I checked the event logs and couldnt find anything there. Please help.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Are you using the VMXNET3 interface, and make sure VMware Tools is installed to use this interface, the E1000 interfaces are only designed as legacy interfaces, so you can install the OS.

Once the OS is installed, install VMware Tools, and then add a new VMXNET3 interface, and remove the older legacy E1000 interface.

and then re-test...

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Well before you get too deep I could consider installing another VM maybe even a linux or windows 2008 just to see what kind of issues arise.

This is not something I have ever seen in VMware. Could be that your environment/hardware cannot handle another VM. Storage could be slow maybe not enough ram.
NishantAuthor Commented:
Thanks again Andrew. I changed the interface from E1000 to VMXNET3 and it not only fixed my issue, but boosted the network performance too. Thanks a lot.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
No problems, always remember VMXNET3 is best! *ALWAYS*
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