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Page 157
Chapter 10: SmartPath Operating System (OS)
• backup: a flash file that the SmartPath AP attempts to load during the reboot process if there is a newly uploaded current
config file or if it cannot load the current config file. See Figures 10-4 and 10-5.
• bootstrap: a flash file containing a second config composed of a combination of default and admin-defined settings. The
SmartPath AP fails over to this config when you enter the reset config command or if both the current and backup config files
fail to load. See Figure 10-6.
• default: a flash file containing only default settings. If there is no bootstrap config, the SmartPath AP reverts to this config when
you enter the reset config command or if both the current and backup config files fail to load. See Figure 10-6.
NOTE: There is also a failed config file, which holds any backup config that fails to load. See Figure 10-5.
When using the CLI, the two most frequently accessed config types are the running config and current config. When you enter a
command in the running config, the SmartPath AP performs it immediately. However, because the running config is stored in
volatile memory (DRAM), the commands are not yet permanent and will be lost when the SmartPath AP next reboots. For your
configuration settings to persist after rebooting, enter the save config command. This command saves the running config to the
current config, which is a file stored in nonvolatile (flash) memory. See Figure 10-3.
(Note: The commands in
bold
have not yet been saved,
which is why they do not appear in the current config.)
Current Config
(in flash memory)
Running Config
(in DRAM)
The running config comprises the current config
plus any commands that have not yet been
saved. The running config runs in DRAM.
The current config comprises saved
commands plus default settings. The
current config is stored in flash memory.
Running Config
New Current Config
Previous Current Config
(overwritten)
When you enter the
save config
command,
the SmartPath AP saves the running config
from DRAM to flash memory, where it
becomes the new current config,
replacing the one previously there.
save config
(Note: After entering the
save
config
command, the current and
running configs become identical.)
When you enter the save config command, the
SmartPath AP saves the running config from DRAM
to flash memory, where it becomes the new current
config, replacing the one previously there.
NOTE: After entering the save config
command, the current and running
configs become identical.
NOTE: The commands in bold have not yet been saved, which
is why they do not appear in the current config.
Figure 10-3. Relationship between running and current config files.
When you upload a configuration file from SmartPath EMS VMA or from a TFTP or SCP server, the SmartPath AP stores the
uploaded file in the backup config partition in flash memory, where it remains until the SmartPath AP reboots. If there is a backup
config file already stored in flash, the newly uploaded file overwrites it. See Figure 10-4.