Switch Engine is the default operating system for the 5720 Series. If you take no action during the initial bootup, you can change the switch OS from the Startup menu on initial activation only by completing the following steps:
For example:
login: adminNote
For the initial password, simply press [Enter].This switch can alternatively run the Fabric Engine Network Operating System. If you answer yes, all data including configurations, logs and debugs will be cleared, except for the license activation status, Fabric Engine will be installed, and Switch Engine will be removed. Would you like to change the switch OS to Fabric Engine? [y/N/q]:
The switch will install Fabric Engine, then reset.
After resetting, your switch will boot with Fabric Engine. See Log In for the First Time on Fabric Engine for more information.