Cisco 3560G 48TS Software Configuration Guide - Page 95

Chapter 4 Assigning the Switch IP Address and Default Gateway Modifying the Startup Configuration Table 4-4 describes the function of the most common environment variables. Table 4-4 Environment Variables Variable BOOT MANUAL_BOOT CONFIG_BUFSIZE CONFIG_FILE Boot Loader Command Cisco IOS Global Configuration Command set BOOT filesystem:/file-url ... boot system filesystem:/file-url A semicolon-separated list of executable files to try to load and execute when automatically booting. If the BOOT environment variable is not set, the system attempts to load and execute the first executable image it can find by using a recursive, depth-first search through the Flash file system. If the BOOT variable is set but the specified images cannot be loaded, the system attempts to boot the first bootable file that it can find in the Flash file system. Specifies the Cisco IOS image to load during the next boot cycle. This command changes the setting of the BOOT environment variable. set MANUAL_BOOT yes boot manual Determines whether the switch automatically or manually boots. Valid values are 1, yes, 0, and no. If it is set to no or 0, the boot loader attempts to automatically boot the system. If it is set to anything else, you must manually boot the switch from the boot loader mode. Enables manually booting the switch during the next boot cycle and changes the setting of the MANUAL_BOOT environment variable. The next time you reboot the system, the switch is in boot loader mode. To boot the system, use the boot loader boot flash:filesystem:/file-url command, and specify the name of the bootable image. set CONFIG_BUFSIZE size boot buffersize size Changes the buffer size that Cisco IOS uses to hold a copy of the configuration file in memory. The configuration file cannot be larger than the buffer size allocation. The range is from 4096 to 524288 bytes. Specifies the size of the file system-simulated NVRAM in Flash memory. The buffer holds a copy of the configuration file in memory. This command changes the setting of the CONFIG_BUFSIZE environment variable. You must reload the switch by using the reload privileged EXEC command for this command to take effect. set CONFIG_FILE flash:/file-url boot config-file flash:/file-url Changes the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration. Specifies the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration. This command changes the CONFIG_FILE environment variable. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 4-15