IBM eServer 240 xSeries User Reference Manual page 46

Note: Your operating system determines the maximum number of IBM Netfinity
Special considerations when combining failover and hot-plug
functions
If your operating system supports hot-plug PCI adapters and the optional redundant
NIC adapter is installed in a hot-plug PCI slot, you can replace the NIC adapter
without turning off the server — even if it is the primary Ethernet controller.
Disconnecting the Ethernet cable from the primary Ethernet controller will cause the
Ethernet traffic to be automatically switched to the secondary Ethernet controller.
This can be very useful when a network problem is caused by faulty adapter
hardware or when you want to upgrade the primary adapter hardware.
Note: If the primary adapter is hot-replaced while the Ethernet traffic is being
Configuring for failover
The failover feature currently is supported by OS/2, Windows NT Server, and
IntraNetWare. The setup required for each operating system follows.
OS/2
Note: The OS/2 operating system does not support hot-plug operations.
1. Add the redundant NIC adapter according to the instructions provided with the
2. Use the ServerGuide CDs to install the AMD PCNet Ethernet Family adapter
3. Using the MPTS Utility program, select the driver from the list and click the Edit
4. Change the PermaNet Server Feature keyword to TRUE and specify the
5. To enable the writing of messages to the IBMCOM\LANTRAN.LOG file when a
6. Restart the server.
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IBM xSeries User's Reference
10/100 Fault Tolerant Adapters that you can install in your server. See the
documentation that comes with the adapter for more information.
handled by the secondary Ethernet controller, the traffic does not
automatically switch back to the primary adapter when the primary adapter
comes back online. See "Configuring for failover."
adapter and in "Working with adapters" on page 53.
device driver. (Refer to the ServerGuide topic.)
button.
Note: Only one driver instance needs to be loaded for each redundant pair of
Ethernet controllers.
Primary and Standby slots that contain the redundant pair. Refer to
"System-board component locations" on page 99 for the locations and slot
numbers of the PCI slots. The integrated controller is located in slot 2 (PCI bus
A slot 2).
failover occurs:
a. Copy the file PCNETOS2.EXE from the root directory of the diskette
created using the ServerGuide CDs to your hard disk.
b. Add the following statement to the CONFIG.SYS file:
Run=d:\path\PCNETOS2.EXE
where d and path are the drive and path to which you copied
PCNETOS2.EXE.