IBM Support

LAN stress may fail using Intel e1000 virtual network adapter under SUSE Linux Enterprise Server 11 64-bit XEN - IBM BladeCenter and System x

Troubleshooting


Problem

With Windows 2008 64-bit VM running on SUSE Linux Enterprise Server 11 (SLES 11) 64-bit XEN, if the virtual Network Interface Controller (NIC) of VM is specified to a full-virtualized Intel e1000 NIC, Local Area Network (LAN) stress on Windows VM may fail.

Resolving The Problem

Source

RETAIN tip: H196249

Symptom

With Windows 2008 64-bit VM running on SUSE Linux Enterprise Server 11 (SLES 11) 64-bit XEN, if the virtual Network Interface Controller (NIC) of VM is specified to a full-virtualized Intel e1000 NIC, Local Area Network (LAN) stress on Windows VM may fail.

Affected configurations

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

  • SUSE Linux Enterprise Server 11, 64-bit XEN, any Service Pack

This tip is not hardware specific.

This tip is not option specific.

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: http://www.ibm.com/servers/eserver/serverproven/compat/us/

Solution

In the instance of ECC errors, it cannot be guaranteed that the cause is solely the Memory Dual In-Line Memory Module (DIMM); therefore, both the controller, as well as the memory, should always be replaced.

If the user has upgraded to a 1 Gigabyte (GB) DIMM, both the controller and the 1 GB memory option should be replaced.

If the user still has the original controller that was shipped with the 512 megabyte (MB) DIMM, only the controller has to be replaced (which includes a new 512 DIMM in replacement part number (FRU)).

Workaround

The user can choose other NICs, such as the Fully Virtualized Realtek 8139 NIC.

Additional information

Novell is working on a fix for this issue.

The symptom is caused by a NIC emulation issue in the SLES 11 XEN kernel, which has limitations on e1000 virtual NIC support. Novell recommends using a Fully Virtualized Realtek 8139 NIC in XEN, which is the default virtual NIC option.

Document Location

Worldwide

Operating System

BladeCenter:SUSE Linux Enterprise Server 11 x86-64

System x:SUSE Linux Enterprise Server 11 x86-64

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Document Information

Modified date:
18 April 2023

UID

ibm1MIGR-5082727