Product(s) affected: DCN-NG systems with master & slave CCU set-up
A DCN-NG system will be installed in a building which uses different VLANs for different floors in the building. They want to be able to have interpreters on one floor (in one VLAN) and the rest of the system on another floor (in another VLAN). To this end they have connected their Master CCU to another VLAN than their Slave CCU. This set-up does not work.
Question is; should this work and if not, why not?
This cannot work in a DCN-NG system because of the way the system is designed.
The communication between the CCU’s, at start-up of the system, uses broadcast messages which are not routed by network devices. These messages have a time-to-live (TTL) of 1, which means that once they attempt to cross into another (V)LAN, the messages are not propagated by the routing (L3) switch.
The reason is that the TTL of the packet is decreased every time it traverses from one network to another. When the TTL’s value reaches 0, the packet is dropped by the routing device.
Therefore, the broadcast packet will never reach the other CCU, resulting in error messages like “No Master CCU” on the Slave CCU.
Therefore the system should be installed on the same (V)LAN. This usually does not pose any technical problems as (V)LANs can be distributed over multiple network devices without issue, it’s just that the predictability of where a device is physically located is less in this instance.
If you are facing unknown problems with your DICENTIS wired system and you need advice from the technical support they will ask for a lot of different information.
For that reason this little program was created to make the extraction of all needed log files, system settings and other data more easily.
After upgrading to DICENTIS Conference system 3.60, TLS1.0 is disabled for security reasons, and TLS1.2 is enabled. Since the Multimedia device does not support TLS1.2, it does not show logo and participant images anymore.
To back up your DICENTIS Server System is one of the most important maintenance task and it should be done on regular basis. Especially if you have to set up your Server for the first time it is highly recommended to do an backup to save your system, programs , settings and so on. The reason obviously for this is if a system crash occurred you should be prepared to set up or recover the Dicentis again. This will save you a lot of trouble if it is done properly beforehand.
There are four main themes to perform for a 100% save back up which will be now explained how to do it.
The DICENTIS Server has a own log file system which is working in the back ground and is called LogDump.
If something went wrong during the operation it will be reported in there. In many times this is a good tool for error analysis as well as fault detection and will often requested by the Technical Support for pre-analysis.
In the next Step-by-step guide it will be shown how to extract the LogDump file form DICENTIS Conference System.
Rapid Spanning Tree Protocol (RSTP) is needed if you want to set up redundant cabling via loops.
By default it is disabled and even if you update your DICENTIS Conference Software it will be again disabled and has to be activated afterwards. Also third party switches must comply with IEEE802:1D-20- 04 and support RSTP.
Please also note that loops have a limited hops which are lower than 21 (devices). If you need more information regarding this please have a look in the installation manual.
The DICENTIS cannot handle more than one enabled NIC at the same time and this could lead that it choose the wrong NIC and interrupts the system.
This will be specially important if you use your own Serve r . To solve this problem it is necessary to precisely define the DICENTIS NIC.
These next few steps will show you how to do that.
In some cases it could be necessary that you need to maintain the Microsoft SQL database which DICENTIS is using to save participants, user, seats and settings.
In the next steps I will explain some of the basics commands.
The DetectDevices script was developed to give a fast feedback on connection problems or any other failure within the DICENTIS wired system. It will simulate a device and give out an advanced log file which can be used to track sporadic or normal connection problems. The technical support will provide this tool to get a deeper look into some issues if needed.
Possible causes and solution(s)
The Dicentis does not need any additional encryption to be set via the OMNEO Firmware Upload Tool. (OFUT)
If you have set this by accident it could lead to that you can not see or update your units with the OFUT any more.
stop the Firmware Upload Tool
delete the following file C:\Program Files\Bosch\OMNEO\Firmware Upload Tool\FirmwareUploadHIConfig.ini
start the Firmware Upload Tool
Encrypted devices did not show up and you can not update them anymore. Do not set a password for default!
Open and delete this file C:\Program Files\Bosch\OMNEO\Firmware Upload Tool\FirmwareUploadHIConfig.ini
Open the OFUT and units will appear again.
In some cases the log file from the Dicentis Server become too big and it has to be cleared to reduce the size from time to time. The normal size is between 10MB and 50MB depending on the operation time but it should normally not grow over 100MB. If it does exceed, is most likely a fatal error within the DICENTIS system which produce a lot of logging each minute.
It could be possible that the driver of the Network Card (3rd party Server) to become intermittent and the log file to grow to 300MB. In the next steps we will show you how to clear the logging.
In some cases, especially if you use a 3rd party PC as DICENTIS Server, it could be necessary to update your network driver.
For example, if discussion units show a red LED from time to time or your DICENTIS is dropping out it could be related to the network driver.
Be aware that a normal Windows Update will not refresh this driver and you have to update it manually!
DICENTIS installation log files are needed for further analysis for Technical support team if the software update failed or later some errors occurred.
Below it is explained how you can extract DICENTIS installation log files.