If replacement operation, perform 'configure replace' for the entire config.

        If merge operation, perform copy <file> running-config.

def commit_config(self, message=""):
        """
        If replacement operation, perform 'configure replace' for the entire config.

        If merge operation, perform copy <file> running-config.
        """
        if message:
            raise NotImplementedError(
                "Commit message not implemented for this platform"
            )
        # Always generate a rollback config on commit
        self._gen_rollback_cfg()

        if self.config_replace:
            # Replace operation
            filename = self.candidate_cfg
            cfg_file = self._gen_full_path(filename)
            if not self._check_file_exists(cfg_file):
                raise ReplaceConfigException("Candidate config file does not exist")
            if self.auto_rollback_on_error:
                cmd = "configure replace {} force revert trigger error".format(cfg_file)
            else:
                cmd = "configure replace {} force".format(cfg_file)
            output = self._commit_handler(cmd)
            if (
                ("original configuration has been successfully restored" in output)
                or ("error" in output.lower())
                or ("not a valid config file" in output.lower())
                or ("failed" in output.lower())
            ):
                msg = "Candidate config could not be applied\n{}".format(output)
                raise ReplaceConfigException(msg)
            elif "%Please turn config archive on" in output:
                msg = "napalm-ios replace() requires Cisco 'archive' feature to be enabled."
                raise ReplaceConfigException(msg)
        else:
            # Merge operation
            filename = self.merge_cfg
            cfg_file = self._gen_full_path(filename)
            if not self._check_file_exists(cfg_file):
                raise MergeConfigException("Merge source config file does not exist")
            cmd = "copy {} running-config".format(cfg_file)
            output = self._commit_handler(cmd)
            if "Invalid input detected" in output:
                self.rollback()
                err_header = "Configuration merge failed; automatic rollback attempted"
                merge_error = "{0}:\n{1}".format(err_header, output)
                raise MergeConfigException(merge_error)

        # After a commit - we no longer know whether this is configured or not.
        self.prompt_quiet_configured = None

        # Save config to startup (both replace and merge)
        output += self.device.save_config()