Cisco WS-C4003 Software Guide - Page 424

Setting the Configuration Register Chapter 28 Modifying the Switch Boot Configuration To set the switch to retain the current CONFIG_FILE environment variable indefinitely, perform this task in privileged mode: Task Command Set the switch to retain the current CONFIG_FILE set boot config-register auto-config environment variable indefinitely. {recurring | non-recurring} This example shows how to set the switch to retain the current CONFIG_FILE variable indefinitely: Console> (enable) set boot config-register auto-config recurring Configuration register is 0x1820 ignore-config: disabled auto-config: recurring console baud: 9600 boot: the ROM monitor Console> (enable) Setting the Switch to Ignore the NVRAM Configuration You can cause the system software to ignore the configuration information stored in NVRAM the next time the switch is restarted. This command affects only the configuration register bits that control whether the switch ignores the NVRAM configuration and leaves the remaining bits unaltered. This command only affects the next system restart. Caution Enabling the ignore-config parameter is the same as entering the clear config all command; that is, it clears the entire configuration stored in NVRAM the next time the switch is restarted. To set the switch to ignore the NVRAM configuration at the next startup, perform this task in privileged mode: Task Command Set the switch to ignore the contents of NVRAM set boot config-register ignore-config enable at startup. This example shows how to set the switch to ignore the NVRAM configuration at the next startup: Console> (enable) set boot config-register ignore-config enable Configuration register is 0x1860 ignore-config: enabled auto-config: recurring console baud: 9600 boot: the ROM monitor Console> (enable) 28-6 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 78-12647-02