To clear an active permanent license from the Cisco 1900 series, 2900 series, and 3900 series routers, perform the following steps:
Step 1. Disable the technology package.
- Disable the active license with the command:
Router(config)# license boot module module-name technology-package package-name disable
- Reload the router using the reload command. A reload is required to make the software package inactive.
Step 2. Clear the license.
- Clear the technology package license from license storage.
Router# license clear feature-name
- Clear the license boot module module-name technology-package package-name disable command used for disabling the active license:
Router(config)# no license boot module module-name technology-package package-name disable
Note: Some licenses, such as built-in licenses, cannot be cleared. Only licenses that have been added by using the license install command are removed. Evaluation licenses are not removed.
Figure 1 shows an example of clearing an active license.
Use the Syntax Checker in Figure 2 to uninstall the security license on router R2.