Note: For device driver and configuration information to complete theinstallation of the I/O expansion card, see the documentation that comeswith the card. Some documentation might also be on the IBMBladeCenter Documentation CD that comes with the BladeCenter unit.For the latest editions of the IBM BladeCenter documentation, go tohttp://www.ibm.com/support on the World Wide Web.8. If you have other options to install or remove, do so now; otherwise, go to“Completing the installation” on page 29.Ethernet controller, switch module, and cabling requirementsOne dual-port Gigabit Ethernet controller is integrated on the BladeCenter JS20Type 8842 system board. To support Ethernet connections and the Serial Over LAN(SOL) feature and to configure the blade server, you must install an optionalEthernet-compatible switch module, such as the Nortel Networks Layer 2-7 GbESwitch Module for IBM BladeCenter or IBM 4-Port Gb Ethernet Switch Module forBladeCenter, in I/O bay 1 of the BladeCenter unit.Each controller port provides a 1000-Mbps full-duplex interface for connecting toone of the Ethernet-compatible switch modules in I/O bays 1 and 2. If you plan toattach additional Ethernet devices to the blade server or the BladeCenter unit, youmust install an optional Ethernet-compatible switch module, such as the NortelNetworks Layer 2-7 GbE Switch Module for IBM BladeCenter or IBM 4-Port GbEthernet Switch Module for BladeCenter, in I/O bay 3 or 4 of the BladeCenter unit,to support these additional Ethernet connections.The optional Ethernet switch modules contain four ports with RJ-45 connectors.These connectors provide a 10/100/1000 Base-T interface (either at half-duplex orfull duplex) for connecting twisted-pair cable to the Ethernet network. You mustpurchase and install a compatible cable to connect these devices. To connect anEthernet controller port to a repeater or switch module, use an unshielded twistedpair (UTP) cable with RJ-45 connectors at both ends. For 100 Mbps or higheroperation, Category 5 cabling is required. For 10 Mbps operation, Category 3 orCategory 5 cabling is required.Notes:v For more information about Ethernet requirements, see the documentation thatcomes with the Ethernet devices and the Installation and User’s Guide for yourBladeCenter unit.v For more information about installing, configuring, and using the Ethernet switchmodules, see the documentation that comes with the Ethernet switch module thatyou are using, such as the IBM 4-Port Gb Ethernet Switch Module forBladeCenter Installation and User’s Guide or Nortel Networks Layer 2-7 GbESwitch Module for IBM BladeCenter Installation Guide.v For more information about the SOL feature, see Chapter 5, “Configurationrequirements for the blade server,” on page 35, the IBM BladeCenter andBladeCenter T Serial Over LAN Setup Guide, and the BladeCenter andBladeCenter T Management Module Command-Line Interface Reference Guide.28 BladeCenter JS20 Type 8842: Installation and User’s Guide