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Chapter 3. Configuring the Gigabit Ethernet switch
module
The Gigabit Ethernet switch module supports two remote-access modes for
management through Ethernet connections. The Gigabit Ethernet switch
module has an internal Ethernet path to the management module and the four
external Ethernet connectors on the Gigabit Ethernet switch module. You can
select the mode that is best suited for your BladeCenter environment.
v Default mode: The default mode uses the internal path to the management
module only. In this mode, the remote-access link to the management
console must be attached to the 100 Mbps Ethernet connector on the
management module. The IP addresses and SNMP parameters of the Gigabit
Ethernet switch modules can be automatically assigned by the IBM Director
BladeCenter Deployment wizard (when available), or you must assign them
through the BladeCenter Management and Configuration Program. This
mode enables the system administrator to provide a secure LAN for
management of the BladeCenter subsystems that is separate from the data
network. See "Establishing a TCP/IP session for the Gigabit Ethernet switch
module using the management module" on page 22 for additional
information.
Important: In this mode, the Gigabit Ethernet switch module does not
respond to remote-management commands through the four external
Ethernet ports on the Gigabit Ethernet switch module.
See the Cisco Systems Intelligent Gigabit Ethernet Switch Modules Software
Configuration Guide on the Documentation CD or available at
http://www.ibm.com/pc/support/ for additional instructions about
configuring the Fiber Ethernet switch module for this mode of operation.
v Remote management mode: The system administrator can choose to enable
remote management of the Gigabit Ethernet switch module through the four
external connectors on the Gigabit Ethernet switch module, instead of or in
addition to access through the management module. This mode can be
enabled only through the management module configuration interface.
When this mode is enabled, the external Ethernet ports will support both
management traffic and BladeCenter application data traffic. See "Enabling
management over external ports" on page 23 for additional information.
This mode enables the Gigabit Ethernet switch module IP addresses to be on
a different IP subnet than the management modules. This is useful when the
Gigabit Ethernet switch modules are to be managed and controlled as part
of the overall network infrastructure, while secure management of other
BladeCenter subsystems is maintained through the management module.
However, management-module access to the switch-module link will be lost
if the Gigabit Ethernet switch module IP address is not on the same IP
subnet as the management module. See "Establishing a TCP/IP session for
© Copyright IBM Corp. 2005
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