Dell Emulex Family of Adapters - Manual (Page 688)

Emulex Drivers for Windows User Manual P010077-01A Rev. A
4. Troubleshooting
Troubleshooting the NIC Drivers
688
Monitoring TCP Offloads
To monitor TCP offloads, in a command window type
netstat -t
This command indicates the offload state for each TCP connection of the system.
Windows Server 2008 (and later versions) allows TCP offloads in more scenarios than
previous versions of Windows Server. In particular, TCP offloads may occur with the
Windows firewall enabled.
When running Windows Server 2008,
the computer restarts and shows
various Stop error codes when
performing one of the following
operations:
• Enabling or disabling TCP
Chimney Offload
• Changing the network adapter
settings
• Upgrading the NIC drivers
Apply the 979614 hotfix as described on the Microsoft website.
When an NDIS driver is being
installed manually on a Windows
Server 2008 system, the installer
installs the first driver it finds, even
if it is not the latest version of the
driver. Windows Server 2008 picks up the first available driver it finds
when an NDIS driver is being installed manually. Thus, an NDIS5
driver will be installed even if a Windows NDIS6 driver is
available. An event log message advises you to update to the
latest driver for best performance.
The system crashes or appears to
hang. In the case of a hang, there
could be a message indicating that
the driver experienced a hardware
malfunction. There are several possible causes for this issue.
• Certain systems require an updated BIOS to properly manage
the power states of newer Intel and AMD processors. Check
with your OEM for information regarding BIOS and firmware
updates that may be required to run well with the latest
releases of the Windows operating systems. Also, certain BIOS
settings may be required. For example, it is recommended
that you disable any low power processor states and low
power settings for PCIe.
• On certain AMD systems, it is possible the intelppm.sys driver
is enabled, and should not be. To query this system driver's run
state, log in as administrator and at the command line type
sc query intelppm
If the results indicate that the intelppm driver is running, you
must disable it. At the command line type
sc config intelppm start= disabled
On all systems, it may be necessary to set the power options to
High Performance. See the operating system documentation for
details.
Table 4-3 Troubleshooting the NIC Drivers (Continued)
Issue Answer/Solution