Configuring strict active/standby interface backup

You can use one of the following methods to configure strict active/standby interface backup:

• Explicitly specify backup interfaces for a primary interface. If this method is used, interface backup changes the state of the backup interface in response to the interface state change of the primary interface.

• Use interface backup with the Track module. If this method is used, interface backup uses a track entry to monitor the link state of the primary interface. Interface backup changes the state of a backup interface in response to the link state change of the primary interface.