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Chapter 3. Configuring the switch
The switch has an internal Ethernet path to the management module, twenty two
external Ethernet data ports, an external management port, and a serial console
port. The switch supports two remote-access modes for management through
Ethernet connections. You can select the mode that is best suited for your IBM Flex
System environment.
v Default mode: The default mode uses the internal path to the management
v External management mode: External management mode allows for the use of
The RS-232 console port provides an alternative path to manage and configure the
switch for local access.
Important:
v Before you configure the switch, make sure that the management modules in the
v The default IP address of the switch is 192.168.70.120, 192.168.70.121,
v If you change the IP address of the switch and restart the IBM Flex System
v The management module and the switch can communicate with each other only
v When configuring the switch using the management interfaces, note that the
© Copyright IBM Corp. 2013
module only. In this mode, the remote-access link to the management console
must be attached to the Ethernet connector on the management module. The
Internet protocol (IP) addresses and SNMP parameters of the switch can be
automatically assigned by the IBM Director Flex System Deployment wizard
(when available), or you must assign them through the IBM Flex System
Management and Configuration program. This mode enables you to provide a
secure LAN for management of the IBM Flex Systems subsystems that is
separate from the data network. See "Establishing a TCP/IP session through the
management module" on page 22 for more information.
alternate management entities to control and configure the switch. You must
enable external management in order to manage the switch using either the
dedicated external management port (EXTM) or any of the external data ports
(EXT1-EXT22, in-band switch management). This mode can be used instead of
or in addition to access through the Chassis Management module. This mode
can be enabled only through the Chassis Management Module configuration
interface. When this mode is enabled, the external SFP+ and QSFP+ ports
support both management and data traffic.
This mode enables the use of additional switch IP addresses on different IP
subnets than the management modules. This is useful when the switches are to
be managed and controlled as part of the overall network infrastructure, while
secure management of other IBM Flex System subsystems is maintained through
the management module. See "Enabling management through external ports" on
page 23 for additional instructions about configuring the switch for this mode of
operation.
IBM Flex System chassis are correctly configured. For more information about
configuring the CMM, see the following documents:
– IBM Flex System Chassis Management Module Installation Guide
– IBM Flex System Chassis Management Module User's Guide
192.168.70.122, or 192.168.70.123 depending on the switch bay where it is
installed.
chassis, the switch maintains this new IP address as its default value.
if they are on the same IP subnet.
apply command changes the currently active configuration. If you want the
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