In a computer network, processing modules exchange data with a peripheral device using managers at the processing module having different management protocols and one or more different management protocol agents in a network interface at the managed device. When a collaborating Web server needs to access state information, the collaborating Web server first determines whether the state information has been modified since the last time the collaborating Web server accessed the state information. Upper surfaces and side surfaces of the ferroelectric capacitors 7 are covered by a second hydrogen barrier layer. The second end is hermetically bondable to a second glass pane. At least two elastomer elements form elastomer bearings for bearing the drive motor.