Hi Biju Thomas,
Thanks for your post. Please try the following methods to improve the network performance.
- Edit the Virtual Machine Properties. In the Power Management under Options menu, check the “Put the guest OS into standby mode and leave the virtual machine powered on”, and put a check on the Virtual NIC under the Wake on LAN for virtual machine traffic on.
- Update the firmware with your manufacturing support. Firmware updates are super-important on server hardware like this. For example, see this post on the Dell forums: "DELL R720 & ESXi 5.0 Network Connectivity Loss on Intel I350 NIC"
- Please use multiple NICs for your management/VM network even if this is a standalone host.
Best Regards,
Ian Xue
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