Alcatel-Lucent 6850-48 User Manual

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Files and Directories
June 2007
Boot and Image Files
Although the flash memory on OmniSwitch 6850 Series 
switches can contain many file types (e.g., log and snapshot 
files), there are four specific file types that provide key switch 
and network functions. These files include the boot.cfg file, 
boot.params file, boot.slot.cfg file, and image (.img) files.
boot.params File
The boot.params file provides IP address, gateway, and mask 
information for the switch. This information is required for 
Ethernet connections to the switch. 
This file also contains default console port parameters (baud 
rate, etc.) and can be modified via the modify boot 
parameters
 CLI command. 
In order to be read by the switch, the boot.params file must be 
placed in the /flash directory. If the file is deleted for any 
reason, a new boot.params file will be automatically gener-
ated on the next system boot. However, all user-configured 
information, such as IP address, gateway, and mask informa-
tion, will be lost. Therefore, it is recommended that you keep a 
backup copy of this file at all times.
boot.cfg File
The boot.cfg file stores your network configuration parame-
ters. When you first boot the switch, no boot.cfg file is 
present. This file is automatically generated when you first 
issue a 
 command to save your configuration 
changes. The file is then automatically placed in the 
/flash/working directory.
Important. Your switch must be running from the 
/flash/working directory in order to save changes to the 
boot.cfg file. Refer to 
 for more information.
Once the configuration parameters stored in the boot.cfg file 
are considered tested and reliable, the file can be copied to the 
/flash/certified directory and become part of the “last known 
good” software for the switch. 
If all copies of this file are deleted and a system boot occurs, 
your network configuration will be lost. Therefore, it is recom-
mended that you keep a backup copy of this file at all times.
Files and Directories