| Paper |
Title |
Page |
| TUP017 |
Managing Alarms and (Log)Messages - the CSS Way
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125 |
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- M. R. Clausen, J. Hatje, G. Liu, M. Moeller, H. R. Rickens, B. Schoeneburg
DESY, Hamburg
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The management of alarms and log messages is in many cases still handled by different applications even though they have a lot in common. Focusing on the common aspect that all of them can be handled as messages allows a generic approach for all of them. The Java Message Service is a specification by Sun which provides an ideal basis to store and forward any kind of messages throughout a control system. Several independent messages sources can generate JMS messages which get sent to JMS servers. Client applications like operator panels as well as message filters or a persistent store (e.g. in Oracle) can register on the JMS server to receive any incoming message. This paper will describe the whole data chain from EPICS front end controllers, system log messages or other control systems through central JMS servers to client applications, persistent stores and an elaborate alarm management system based on the experience during the last two years of operation.
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Poster
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| WED004 |
Management of the LHCb Online Network Based on SCADA System
|
621 |
| |
- G. Liu, N. Neufeld
CERN, Geneva
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LHCb employs two large networks based on Ethernet. One is a data network dedicated for data acquisition, the other one is a control network which connects all devices in LHCb. Sophisticated monitoring of both networks at all levels is essential for the successful operation of the experiment. LHCb uses a commercial SCADA system (PVSSII) for its Experiment Control System (ECS). For the consistency and efficiency reason, the network management system is implemented in the same framework. We show here how a large scale network can be monitored and managed using tools originally made for industrial supervisory control, and discuss several tools developed to facilitate the integration of network management and monitoring in LHCb's control system. In the network management system, the status of the network is monitored at different levels, including the application level, the devices, the ports and the connectivities. Alarms can be issued to inform the experiment operators and online network experts about errors such as dropped packets or broadcast-storms. Reports and long-term monitoring are possible by using powerful trending tools.
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