Mellanox Technologies Inc
Mellanox Ethernet Microsoft Windows 64-bit Driver Release
September 20th, 2013

RELEASE Version 04.40.00
		
Software Compatibility
======================
This release of software supports the following hardware:
- Mellanox ConnectX-3 Dual Port 10 GbE KR Blade Mezzanine Ethernet Card
- Mellanox ConnectX-3 Dual Port 40 GbE QSFP+ Ethernet Adapter
- Mellanox ConnectX-3 Dual Port 10 GbE DA/SFP+ Ethernet Adapter

This release of software supports the following operating systems:

- Microsoft Windows Server 2008 SP2 x64
- Microsoft Windows Server 2008 R2 w/SP1    
- Microsoft Windows Small Business Server 2011 Standard edition
- Microsoft Windows Server 2012

Release Contents
==================
- Mellanox WinOF 4.3  for Microsoft Windows Server 2008 SP2 x64
- Mellanox WinOF 4.40 for Microsoft Windows Server 2008 R2 w/SP1    
- Mellanox WinOF 4.40 for Microsoft Windows Small Business Server 2011 Standard edition
- Mellanox WinOF 4.40 for Microsoft Windows Server 2012

* Third-party trademarks and copyrights are the property of their respective owners.

Feature Summary 
===============
- Initial Dell release of Mellanox Ethernet Drivers supporting Mellanox ConnectX-3 Adapters on Dell PowerEdge Servers.

Fixes
===============
- Initial Release

Important Notes
===============
- After the installer completes, the system must be rebooted to complete the device driver installation

- Wake on LAN is only supported with Mellanox ConnectX-3 Dual Port 10 GbE KR Blade Mezzanine Ethernet Card

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Currently known issues and limitations with Mellanox Ethernet drivers and devices
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1. Disabling network device corresponding to port 1 of the Mellanox adapter may not cause the physical link to drop.
No network traffic will actually be transmitted on that link.

2. No current support for SR-IOV in Windows operating systems

3. No current support for Brocade M8428-k IO Module for Dell PowerEdge M1000e chassis

4. No current support for Dell PowerConnect M8024-k IO Module for Dell PowerEdge M1000e chassis

Mellanox Known General Issues with WinOF 4.40
- Pinning all the physical memory (used by RDMA operations, such as register memory, pin user memory) on the machine, on Operating Systems prior to Windows Server 2012, may cause the machine to hang.  Avoid pining the whole machine memory in those Operating Systems.
- When the tracer tool traces many events, it may consume a large amount of memory (up to several GB ram).  Reduce the verbose level.

Mellanox Known Ethernet Issues with WinOF 4.40
- Disabling the "Priority & VLAN tag" in the UI which VLANID is configured, may result in sending packets with the configured VLANID.  Remove the VLANID before disabling the "Priority & VLAN tag".
- WakeOnMagicPacket registry key is not added to the registry although WoL is supported by the driver and by the NIC.
- When the ports of the device are configured as Ethernet only, ibstat/vstat may display wrong information.
- High multicast drop rate on multicast storming. Use "Multicast traffic" tuning option under the performance tab.
For further information, please refer to section “Tunable Performance Parameters” in the User Manual.
- Driver installation requires deletion of the mlx4_bus.sys file in Windows Server 2008 R and WLH OSs when using the PXE package.  Delete the mlx4_bus.sys file and reboot the machine to install the driver

Mellanox Known RoCE Issues with WinOF 4.40
- RoCE traffic cannot go through the router. It works in the same subnet only
- RoCE does not support: Multicast traffic, VLAN, Layer 3 feature
- ND tests nd_write_bw/lat, nd_read_bw/lat are not functional in Windows 2008 R2.  When running them, they fail and the following message is displayed: "NDOpenAdapter failed"

Mellanox Known Performance Issues with WinOF 4.40
- When using WinOF 4.40 or later, low throughput will be seen on 40GbE adapters when QoS is enabled.
Disable QoS when it is not in use.  Open a PowerShell prompt. Run: Disable-NetAdapter-Qos -name <Interface Name> where <Interface Name> is, for example, "Ethernet 1"
- Perf_tuning is supported only when one of the two NUMA nodes are in use.