Retrieve running configuration and device state information.

        *filter* specifies the portion of the configuration to retrieve (by default entire configuration is retrieved)

        :seealso: :ref:`filter_params`

def request(self, filter=None):
        """Retrieve running configuration and device state information.

        *filter* specifies the portion of the configuration to retrieve (by default entire configuration is retrieved)

        :seealso: :ref:`filter_params`
        """
        node = new_ele("get-bulk")
        if filter is not None:
            node.append(util.build_filter(filter))
        return self._request(node)