Hi Folks,
Just looking for someone to point me in the right direction to try and troubleshoot this issue. I have a problem with one of my Hyper-V hosts. The host is a DL380 Gen8 with an integrated HP 4 port 331FLR 1GB adapter (I believe these are made by Broadcom) and has Server 2012 R2 Std installed
Port 1 is attached to a Hyper-V External Virtual Switch which is shared between VM's on the host and the host's OS (Server 2012 R2 Std) which is functioning as a management network. The problem is that when a large amount of data is transferred to/from the hosts OS the interface appears to lock up and becomes unresponsive (RDP connection is lost, unable to ping, application stops transferring data). This occurs from within the host only, the VM's attached to the same virtual switch still have connectivity and can still reach each other and machines on different hosts.
I have managed to replicate the issue using Veeam Hyper-V Backup & Replication (taking backup from another host) and also Google Drive. In the case of the former the data was transferring at a sustained 850Mbps for around 2 minutes before the interface locked up.
Looking at the adapter status in Power Shell shows the interface is still up but it is unusable, the only way to fix the issue I have found is to reboot the host which isn't ideal.
Any advice would be greatly appreciated.
Dan