Virtual machines lose network connectivity when you use Broadcom NetXtreme 1-gigabit network adapters

By January 13, 2016IT Solutions

This is a known issue with Broadcom NetXtreme 1-gigabit network adapters that use the b57nd60a.sys driver, when VMQ is enabled on the network adapter. (By default, VMQ is enabled by the Broadcom network driver.)

Broadcom designates these network adapters as 57xx based chipsets. They include 5714, 5715, 5717, 5718, 5719, 5720, 5721, 5722, 5723, and 5780.
These network adapters are also sold under different model numbers by some server OEMs. HP sells these drivers under model numbers NC1xx, NC3xx, and NC7xx. You may be using driver version 16.2, 16.4, or 16.6, depending on which OEM version you are using or whether you are using the Broadcom driver version.

Resolution

This issue is resolved in Broadcom driver b57nd60a.sys version 16.8 and newer. In March 2015, Broadcom published driver version 17.0 for download. In April 2015, HP published version 16.8 of the driver for their affected network adapters, here is one of their download locations. Please contact your server OEM if you need a driver that is specific to your server.

 

HOPE THIS HELPS!!!