Cabletron Systems SmartCell ZX-250, User Manual

Page: 75 / 132

SmartCell ZX-250 User Guide 4-29
Switch Administration Upgrading and Changing Software
...........................................................................
...........................................................................
...................................................
Validity checks of the Switch Software Downloaded file...
All Validity checks OK
Programming downloaded image into Switch Software section, please wait...
New Switch Software programmed successfully
=>
n•
Check whether the switch download is successful by entering the
go
command.
4.7.6 Using the Update Firmware Command
You can upgrade the operating software of the SmartCell ZX-250 while the switch is running its current software. This
procedure is known as a hot upgrade and is accomplished by the
update firmware
command.
When the SmartCell ZX-250 switch is started (or rebooted), it copies its operating software from flash RAM to the
CPU’s program memory. When a hot upgrade is performed, the image in flash RAM is erased and replaced with the
new software image. While the upgrade is occurring, the switch continues to run its copy in program memory. When
the switch is rebooted, the new software image residing in flash RAM is copied into system memory and then run.
To use the hot upgrade feature, the SmartCell ZX-250 must have network access to an end station running TFTP server
software. The SmartCell ZX-250 operating software file must reside within the directory specified by the TFTP server
software. Often, this directory is /tftpboot. However, it may be different with your TFTP server software.
The following is an example of a hot upgrade:
SmartCell ZX # update firmware
ServerIP() : 214.95.77.240
Path() : luxor/server.ima
You are updating the code image in the flash.
Are you sure this is what you want to do?
Confirm(y/n)?:y
Verifying bootfile luxor/server.ima on 214.95.77.240... passed.
Erasing Flash.
Using TFTP to get and program bootfile luxor/server.ima from 204.95.77.240.
2785K (2852012 bytes) received.
Flash update succeeded.
You will have to reboot for the new image to take effect.
SmartCell ZX #
Notice that the
update firmware
command does not use Bootp to find the TFTP server. Instead, the
update firmware
command requires that you specify the IP address of the TFTP server, the path to the image file, and the file name.
Unsuccessful Update
If the
update firmware
command fails, DO NOT turn off or attempt to reboot your SmartCell ZX-250 switch. In its
current state, the operating software normally stored in flash RAM is erased. The switch is functioning only because
it is running the image of the operating software that resides in volatile system memory.
If possible, determine why the
update firmware
command failed. Common causes for failure are:
U
Incorrect path and file names
U
Improper permission settings on the directory containing the upgrade software
U
SmartCell ZX-250 is not physically connected to the network
U
SmartCell ZX-250 cannot reach the TFTP server’s subnet