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C
HAPTER
 69: D
EVICE
 
MANAGEMENT
The precision of switch timer is 1 minute. The switch will reboot in one minute 
when time comes to the specified rebooting point.
Specifying the Bootstrap 
Programs for the Switch
You can specify two bootstrap programs for both active and standby SRPCs of the 
switch, with one used as the primary program and the other as the backup 
program. You can use the following command to specify the bootstrap programs 
for the switch:
If the switch fails to boot up through the specified bootstrap program, it retries to 
boot up by using a program in the flash memory or the CF card. If it fails again, 
the switch fails to start.
The switch select one application program as bootstrap program from Flash or CF 
card according to the different values of flag BootDev. The detail is as follows:
There are two primary bootstrap programs: one is in the Flash card (assume it is 
A); the other is in the CF card (assume it is B).
There are two backup programs too: one is in the Flash card (assume it is C); 
the other is in the CF card (assume it is D).
There is one flag BootDev.
You can view or modify the names of the bootstrap programs and enable 
equipment flag BootDev.
The detailed rules that the switch follows in selecting a bootstrap program are as 
follows in Table 3-4.
Cancel the parameter configuration of timing 
reboot function of the switch 
undo schedule reboot 
Check the parameter configuration of the 
reboot terminal service of the current switch 
display schedule reboot
Table 745   Enable the Timing Reboot Function
Operation Command 
Table 746   Specify a bootstrap program for the switch
Operation 
Command 
Remarks 
Specify the bootstrap 
program for the switch 
boot boot-loader { primary 
backup } file-url [ slot 
slot-number ] 
Execute this command in user 
view.
Table 747   The sequence of bootstrap program selection by the switch
BootDev Value of for boot 
from primary bootstrap 
program 
 BootDev value for boot 
from backup bootstrap 
program 
Bootstrap program 
selection sequence 
A, C, B, D 
A, D, B, C 
B, D, A, C 
B, C, A, D