Cisco 2525 Guía de usuario descargar pdf (Pagina 133)

Maintaining the Cisco 2524 and Cisco 2525 Routers A-21

Virtual Configuration Register Settings

Step 3 To set the contents of the conﬁguration register, enter the conﬁguration command

conﬁg-register value, where value is a hexadecimal number preceded by 0x (see

Table A-2 and Table A-3):

config-register 0x

value

(The virtual conﬁguration register is stored in NVRAM.)

Table A-3 Explanation of Boot Field (Conﬁguration Register Bits 00 to 03)

Step 4

Press Ctrl-Z to exit conﬁguration mode. The new settings will be saved to

memory; however, the new settings do not take effect until the system software is

reloaded by rebooting the router.

Step 5 To display the conﬁguration register value currently in effect and the value that

will be used at the next reload, enter the show version EXEC command. The value

displays on the last line of the screen display:

Configuration register is 0x142 (will be 0x102 at next reload)

Step 6 Reboot the router. The new value takes effect. Conﬁguration register changes take

effect only when the router restarts, which occurs when you switch the power OFF

and ON or when you enter the reload command.

Boot Field Boot Process

0x0 Stops the boot process in the ROM monitor.

0x1 Stops the boot process in the boot ROM monitor.

0x3–0xF Speciﬁes a default ﬁlename for booting over the network from a TFTP

server.

Enables boot system commands that override the default ﬁlename for

booting over the network from a TFTP server.

0x2 Full boot process, which loads the Cisco IOS image in Flash memory.

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Cisco 2525 Guía de usuario Pagina 133