1-4
z
The system does not check the values of the
view
and
command
arguments. Therefore, ensure the
correctness of the
command
argument (including the correct format of
command
and the correct
relationship between the
command
and
view
arguments).
z
After the specified automatic execution time is reached, the system executes the specified
command in the background without displaying any information except system information such as
log, trap and debug.
z
The system does not require any interactive information when it is executing the specified
command. If there is information for you to confirm, the system automatically inputs
Y
or
Yes
; if
characters need to be input, the system automatically inputs a default character string, or inputs an
empty character string when there is no default character string.
z
For the commands used to switch user interfaces, such as
telnet
,
ftp
, and
ssh2
, the commands
used to switch views, such as
system-view
,
quit
, and the commands used to modify status of a
user that is executing commands, such as
super
, the operation interface, command view and
status of the current user are not changed after the automatic execution function is performed.
z
If the system time is modified after the automatic execution function is configured, the scheduled
automatic execution configuration turns invalid automatically.
z
Only the last configuration takes effect if you execute the
schedule job
command repeatedly.
Upgrading Device Software
Device Software Overview
Device software consists of the Boot ROM program and the system boot file. After the device is
powered on, the device runs the Boot ROM program, initializes the hardware, and displays the
hardware information. Then the device runs the boot file. The boot file provides drivers and adaption for
hardware, and implements service features. The Boot ROM program and system boot file are required
for the startup and running of a device.
Figure 1-1
illustrates their relationship.
Figure 1-1
Relationship between the Boot ROM program and the system boot file
