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Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
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Chapter3 Assigning the Switch IP Address and Default Gateway
Modifying the Startup Configuration
This command saves the configuration settings that you made. If you fail to do this, your configuration
will be lost the next time you reload the system. To display information stored in the NVRAM section
of flash memory, use the show startup-config or more startup-config privileged EXEC command.
For more information about alternative locations from which to c opy the c onfigurati on file, se e
Appendix B, “Working with the Cisco IOS File System, Configuration Files, and Software Images.”
Modifying the Startup Configuration
These sections describe how to modify the switch startup configuration:
•Default Boot Configuration, page3-12
•Automatically Downloading a Configuration File, page3-12
•Booting Manually, page 3-13
•Booting a Specific Software Image, page 3-14
•Controlling Environment Variables, page 3-15
See also Appendix B, “Working with the Cisco IOS File System, Configuration Files, and Software
Images,” for information about switch configuration files. See the “Switch Stack Configuration Files”
section on page 5-16 for information about switch stack configuration files.

Default Boot Configuration

Table 3 -3 shows the default boot configuration.

Automatically Downloading a Configuration File

You can automatically download a configuration file to your switch by using the DHCP-based
autoconfiguration feature. For more information, see the “Understanding DHCP-Based
Autoconfiguration” section on page 3-3.
Table3-3 Default Boot Configuration
Feature Default Setting
Operating system software image The switch attempts to automatically boot up the system using information in the
BOOT environment variable. If the varia ble is not set, the swi tch attem pts to load and
execute the first executable image it can by p erformin g a recur si ve, depth- fir st searc h
throughout the flash file system.
The Cisco IOS image is stored in a directory that has the s ame na me as the imag e f ile
(excluding the .bin extension).
In a depth-first search of a directory, each encountered subdirectory is completely
searched before continuing the search in the original directory.
Configuration file Configured switches use the config.text file stored on the system board in flash
memory.
A new switch has no configuration file.