Cisco WS-C2980G-A Software Guide - Page 522
Setting the Switch to Ignore the NVRAM Configuration, Setting the BOOT Environment Variable
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Setting the BOOT Environment Variable Chapter 32 Modifying the Switch Boot Configuration Setting the Switch to Ignore the NVRAM Configuration You can cause the system software to ignore the configuration information that is stored in NVRAM when 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) Setting the BOOT Environment Variable The next two sections describe how to modify the BOOT environment variable. Setting the BOOT Environment Variable To add a system image to the BOOT environment variable, perform this task in privileged mode: Task Specify a system image to add to the BOOT environment variable. Command set boot system flash device:[filename] [prepend] [mod_num] This example shows how to add system images to the BOOT environment variable: Console> (enable) set boot system flash bootflash:cat4000.5-1-1.bin BOOT variable = bootflash:cat4000.5-1-1.bin,1; Console> (enable) set boot system flash bootflash:cat4000.4-5-2.bin BOOT variable = bootflash:cat4000.5-1-1.bin,1;bootflash:cat4000.4-5-2.bin,1; Console> (enable) set boot system flash bootflash:cat4000.6-1-1.bin prepend BOOT variable = bootflash:cat4000.6-1-1.bin,1;bootflash:cat4000.5-1-1.bin,1; bootflash:cat4000.4-5-2.bin,1; Console> (enable) 32-6 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
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