DCN multimedia Release Notes 1.41
5
Bosch Security Systems| 2015-02-24
Issue:
Delay of audio in a multi-subnet DCN multimedia system using Cisco c3560x with firmware 15.0.1
SE3 c3560e-universalk9-mz.150-1.SE3.bin
Solution:
Use the tested and supported firmware versions:
- 12.2.55 SE5 (c3560e-universalk9-mz.122-55.SE5.bin)
- 15.2.2E (c3560e-universalk9-mz.152-2.E.bin)
Issue:
Connecting, out of the box, DCN multimedia devices to a network switch can cause connection
problems because the DCN multimedia devices have Rapid Spanning Tree Protocol (RSTP) by
default enabled and not all network switches support this protocol.
Solution:
Upgrade the DCN multimedia devices with only DCNM-APS and PC connected.
Issue:
Client PC does not connect to DCN multimedia server when it is not in the same subnet
Solution:
Define and configure the system in such a way that all Client PC’s are in the same subnet as the
DCN multimedia server
Issue:
When using managed switches with IGMP enabled, this issue can result in loss of audio and other
failures.
Solution:
In your switch set igmp-last-member-query-count=7, igmp-last-member-query-interval=10000 and
enable the IGMP querier to a repetition rate of 60s. If your switch does not implement an IGMP
querier, you can use the IGMP querier in the ARNI-E.
3.3
Software and hardware installation
Issue:
Upgrade DCN multimedia to 1.31 on Windows 2012 fails.
Solution:
Run the installation process again.
Issue:
Failsafe devices are not automatically restored by the FWUT if they are not in the same subnet as
the FWUT e.g. a multi subnet network with an ARNI.
Solution:
Disconnect all devices which are in failsafe mode and connect them to a system with one subnet
and without an ARNI. The failsafe mechanism is based on multicast DNS which causes this
technical constraint. Failsafe works with multicast DNS, its a technical constraint. Note: do not
connect more than 10 failsafe devices at the same time.
Issue:
Upgrading DCN multimedia devices (DCNM-MMD) which have firmware prior to 1.2 does not work
in a system with an ARNI, because the Firmware Upload Tool does not list the DCNM-MMDs.
Version: 1.2
Solution:
Upgrade the DCN multimedia devices with the ARNI not connected. Note: limit the system size to
upto 100 DCNM-MMDs while upgrading.
Issue:
Failed to install DCN multimedia because of failure "Failed to verify signature of payload:
SQLServer2008R2.
Solution:
The PC is missing the latest Microsoft Windows update. Please get the latest Microsoft Windows
updates installed on the PC before starting the DCN multimedia setup.
