HP 6120XG ProCurve Series 6120 Blade Switches Management and Configuration Gui - Page 111

Switch Memory and Configuration Overview Overview This chapter describes: ■ How switch memory manages configuration changes ■ How the CLI implements configuration changes ■ How the menu interface and web browser interface implement configu- ration changes ■ How the switch provides software options through primary/secondary flash images ■ How to use the switch's primary and secondary flash options, including displaying flash information, booting or restarting the switch, and other topics Configuration File Management The switch maintains two configuration files, the running-config file and the startup-config file. Volatile Memory Running-Config File (Controls switch operation. When the switch boots, the contents of this file are erased and replaced by the contents of the startup-config file.) Flash (Non-Volatile) Memory Startup-Config File (Preserves the most recently saved configuration through any subsequent reboot.) CLI configuration changes are written to this file. To use the CLI to save the latest version of this file to the startupconfig file, you must execute the write memory command. Menu interface configuration changes are simultaneously written to both of these files. Figure 6-1. Conceptual Illustration of Switch Memory Operation ■ Running Config File: Exists in volatile memory and controls switch operation. If no configuration changes have been made in the CLI since the switch was last booted, the running-config file is identical to the startup-config file. 6-3