show running-config

The virtual file running-config consists of a list of commands that, taken together, result in the currently running system configuration. This list of commands is usually not 100% identical to the list of commands a user has input to configure the device. That is because running-config is a textual representation of the system configuration that is stored in binary form in the RAM memory of the device. Because the effective device configuration is huge, running-config in the majority of cases only lists the delta between default settings and current settings. This significantly reduces the amount of output and greatly improves readability of the configuration, but it does require the reader to know what the default settings are. With show running-config all-defaults, it is possible to include values that are at default.