One of our servers keeps losing it´s Default gateway, problem is that it´s at the moment the only dfs server and hosts 2 Hyper-V machines.
When the Default Gateway is lost users can't work any longer, so this is what we've tried:
Removed the Intel PRO 1000VT Quad Gbit networkcard and configured the onboard Broadcom quad gbit card.
Our servers are connected to two Layer 3 Procurve switches, and I've allready tried to change the networkcables for brand new ones, also switchports have been swapped.
Removed static network settings and inserted a fixed ip for this machine in the DHCP so it does get the same IP.
This weekend we're going to completely re-install the 3 servers and make a new Hyper-V cluster
So I'm only after a quick fix so it stops losing the default gateway.