Obtaining The Latest Level Of Switch Firmware; Upgrading The Switch Firmware - Lenovo CN4093 User Manual

Obtaining the Latest Level of Switch Firmware

Upgrading the Switch Firmware

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CN4093 10 Gb Converged Scalable Switch User's Guide
If firmware updates are available, you can download them from the Lenovo website:
http://support.lenovo.com/
Note: Changes are made periodically to the Lenovo website. Procedures for
locating firmware and documentation might vary slightly from what is
described in this document.
Attention:
• Before updating the firmware, save a copy of the configuration to a separate
device. In the event of a failed update, the saved configuration can be restored.
For more information about the configuration file, see the Application Guide and
Command Reference for your specific switch and firmware version.
• Installing the incorrect firmware might cause the switch to malfunction. Before
you install firmware, read any release notes, readme files and change history
files that are provided with the downloaded update. These files contain important
information about the update and the procedure for installing the update,
including any special procedure or requirements for updating from an early
firmware version to the latest version.
You can upgrade the switch firmware by using a TFTP or SFTP file server. Typically,
the file server runs as an application under your operating system. Make sure that
the file server application is installed on your file server; then, download the switch
firmware images from the Lenovo website into a directory on your file server. Then
enable the file server and set its default directory to the directory where the switch
firmware image resides.
Note: Updating the firmware involves rebooting the switch. If you have made any
configuration changes you wish to persist beyond the upgrade process, you
must type the copy running-config startup-config command. This
command stores the current switch configuration and all changes to
nonvolatile memory.
To transfer the switch firmware image files from the TFTP or SFTP file server to the
switch, you can establish a Secure Shell (SSH) v2 or Telnet session through the
CMM. Ping the file server to make sure that you have a connection. The session
performs optimally if all three network entities (file server, CMM, and switch IP
addresses) are on the same subnet. Otherwise, you must use a router and
configure a gateway address on the switch. Use the management-module interface
to configure the IP addresses of the CMM external interface (eth0) and the switch so
that they are both on the same subnet as the file server.