Alcatel Omni Switch/Router, User Manual

Page: 68 / 1100

Flash Memory and Omni Switch/Router Software
Page 2-8
Flash Memory Guidelines
The switch alters flash memory contents when a software command requests a configuration
change, when a remote administrator downloads a new executable image, or when the
switch fails and a record of the failure is written to flash memory. These operations require
available space in flash memory.
In general the flash memory on the switch should always have at least 75000 bytes available
at all times. In a switch with 8 MB of flash memory, for example, the images in flash should
never exceed 7.45 MB. (You can view how much flash memory is available through the
ls
command.) This will allow enough room in flash for booting and configuration file expan-
sions. If your flash memory exceeds this amount, then you need to delete some images from
flash.
In addition, the flash file system has a limit of 256 files, including configuration, logging, and
other files. When this 256-file limit is reached, configuration file expansions will cease and
new files will not be able to be loaded. This file limit applies even if there is enough memory
available in flash.
Not all image files in flash memory are required—only those that must be used with the
switching modules in your Omni Switch/Router. You can remove any files that are not
required for your Omni Switch/Router configuration by using the
rm
command. For example,
if you do not have
T1
/
E1
ports, you could remove the
t1e1drv.img
file.