IBM 6000R Hardware Maintenance Manual - Page 114

net traffic switches back to the primary Ethernet controller. The switch back to the primary Ethernet controller can be automatic or manually controlled, depending on the setup and operating system. Note that only one controller in the redundant pair is active at any given time. For example, if the primary Ethernet controller is active, then the secondary Ethernet controller cannot be used for any other network operation. Note: Your operating system determines the maximum number of IBM Netfinity 10/100 Fault Tolerant Adapters that you can install in the server. See the documentation that comes with the adapter for more information. Considerations when combining failover and hotplug 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 powering 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 switch automatically to the secondary Ethernet controller. This can be very useful if a faulty adapter causes a network problem, or if you want to upgrade the primary adapter hardware. Note: If you hot-replace the primary adapter while the Ethernet traffic is being 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". Configuring for failover: The failover feature currently is supported by Windows NT Server and IntraNetWare. The setup required for each operating system follows. Windows NT Server: IBM offers hot-plug support for Windows NT Server Version 4.0. Failover can work in conjunction with hot-plug support or independently. If you are not using hot-plug support, go to "Windows NT Server failover setup" on page 103. Windows NT Server hot-plug setup: IBM Netfinity Hot Plug PCI for Windows NT Server 4.0 package is available for download from the IBM Web site at: http://www.pc.ibm.com/support Enter the brand type of Server, click on Downloadable files and look for Hot Plug. The IBM Netfinity Hot Plug PCI for Windows NT Server 4.0 package uses the Intel Desktop Management Interface (DMI) to control hot-plug support for the Ethernet controllers. The Ethernet controller in your computer is DMI compliant. Download and install the following software in the order listed: 1. IBM Netfinity PCI Hotplug for Windows NT 4.0 Failover DMI Agent 2. IBM Netfinity PCI Hotplug for Windows NT 4.0 Solution 102 Netfinity 6000R Type 8682 Models 1RY, 2RY