Chapter 5. Configuring the GbE switch moduleThe GbE switch module has an internal Ethernet path to the managementmodule, four external Ethernet ports, and a serial console port. The GbE switchmodule supports two remote-access modes for management through Ethernetconnections. You can select the mode that is best suited for your BladeCenterenvironment.v Default mode: The default mode uses the internal path to the managementmodule only. In this mode, the remote-access link to the managementconsole must be attached to the Ethernet connector on the managementmodule. The IP addresses and SNMP parameters of the GbE switch modulescan be automatically assigned by the IBM Director BladeCenter Deploymentwizard (when available), or you must assign them through the BladeCenterManagement and Configuration Program. This mode enables the systemadministrator to provide a secure LAN for management of the BladeCentersubsystems that is separate from the data network. See “Establishing aTCP/IP session using the management module” on page 27 for moreinformation.v Remote management mode: The system administrator can choose to enableremote management of the GbE switch module through the four externalports, instead of or in addition to access through the management module.This mode can be enabled only through the management moduleconfiguration interface. When this mode is enabled, the external Ethernetports will support both management traffic and BladeCenter applicationdata traffic.This mode enables the use of additional GbE switch module IP addresses ondifferent IP subnets than the management modules. This is useful when theGbE switch modules are to be managed and controlled as part of the overallnetwork infrastructure, while secure management of other BladeCentersubsystems is maintained through the management module. See “Enablingmanagement over external ports” on page 28 for additional instructionsabout configuring the GbE switch module for this mode of operation.The RS-232 console port provides an alternative path to manage and configurethe switch for local access.Important:v Before you configure the GbE switch module, make sure that themanagement modules in the BladeCenter unit are correctly configured. Seethe Installation and User’s Guide for your BladeCenter unit type for moreinformation about configuring the GbE switch module.© Copyright IBM Corp. 2006 25