Hi,
I have two Windows Server 2012 R2 servers connected to three PowerVault MD3220i through a pair of PowerConnect 5524s. I have set up jumbo frames on the servers, switches and the PowerVaults. I can ping -f -l 8972 the powervaults from the servers and that working fine. When I look at the iSCSI statistics though, the JF column stays at zero, even when i'm putting quite a lot of load on the storage arrays.
The servers and each array controller are connected via 4 Ethernet ports on different subnets, all set and tested for jumbo frames. Flow control enabled, chimney disabled. Cards set to 9014 and PVs set to 9000.
I'm using the Microsoft iSCSI initiator, set up via the dell configuration utility on Intel I350 network cards.
Any ideas why it's not using/showing jumbo frames?