Upgrading The Switch Firmware - Lenovo Flex System Fabric CN4093 Installation Manual

Upgrading the Switch Firmware

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CN4093 Installation Guide
You can upgrade the switch firmware by using an FTP, 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 FTP, 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.
Examples of IP addresses and masks are described in the following table.
Network entity
FTP, TFTP or SFTP file
server
CMM (eth0)
Switch‐module current
IP configuration (IF 128)
Note: With this configuration, you can ping the switch from the file server.
IP address
192.168.2.178
192.168.2.237
192.168.2.51
Mask
255.255.255.0
255.255.255.0
255.255.255.0