Hyper-V Connectivity Issue

Update:  Newer firmware has been released since this was originally posted.

Ran into an interesting issue last week with a HP DL 585 Hyper-V host which had intermittent network connectivity over one of its defined virtual networks.

In the system event log the following warning was logged:

To resolve the issue, HP has released an updated NIC driver which is dated 11-11-2011.

The below is pasted from above to facilitate easier searching:

DEVICE: HP NC375T PCI Express Quad Port Gigabit Server Adapter

PROBLEM: Tx path is hung. The device is being reset.

ACTION: Adapter recovers from this error automatically.

The driver update is downloadable from here.

Cheers,

Rhoderick