Unable to map network drive with TCP/IP Offload Engine (TOE) enabled - Servers

Resolving The Problem

Source

RETAIN tip: H001281

Issue

When TCP/IP Offload Engine (TOE) is enabled on a 4-node system, the user will not be able to map a network drive.

The user can map a network drive when TOE is disabled.

Affected configurations

The system may be any of the following IBM servers:

• System x3850 M2, type 7233, any model
• System x3850 M2, type 7234, any model
• System x3950 M2, type 7141, any model
• System x3950 M2, type 7233, any model
• System x3950 M2, type 7234, any model

This tip is not option specific.

The system is configured with at least one of the following:

• Microsoft Windows 2003 Server, any service pack
• Microsoft Windows 2003 Server for 32-bit Servers, any service pack
• Microsoft Windows 2003 Server for 64-bit Servers, any service pack
• Microsoft Windows 2003 Server, Datacenter Edition, any service pack
• Microsoft Windows 2003 Server, EE x64, any service pack
• Microsoft Windows 2003 Server, x64 Edition, any service pack
• Microsoft Windows Server 2008, Datacenter 32-bit, any service pack
• Microsoft Windows Server 2008, Datacenter 64-bit, any service pack
• Microsoft Windows Server 2008, Enterprise 32-bit, any service pack
• Microsoft Windows Server 2008, Enterprise 64-bit, any service pack
• Microsoft Windows Server 2008, Standard 32-bit, any service pack
• Microsoft Windows Server 2008, Standard 64-bit, any service pack

Note: This does not imply that the network operating system will work under all combinations of hardware and software.

Please see the compatibility page for more information:

Workaround

Refer to Microsoft KB 948496 for more information. The file is available at the Microsoft web site at the following URL:

Additional information

The Microsoft Knowledge Base article explains the issues with enabling TOE.