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en | Getting started
3.3
Check network and web browser settings
In order to make sure that the network connection is successfully between the PRAESENSA
system controller and the configuration PC, the settings described in the following chapters
must be checked/done.
3.3.1
Ethernet adapter settings
If PRAESENSA is being used as a standalone system, it uses the so‑called dynamic link‑local
addresses. This means that the TCP/IPv4 setting of the configuration computer need to be set
to "Obtain an IP address automatically". Normally, these settings are default and therefore do
not require PC network configuration settings.
IMPORTANT: Without this setting, your PRAESENSA configuration computer has not
automatically assigned an IP‑address and hence is not able to operate in the PRAESENSA
network. To check/set (Windows 10):
1.
2.
3.
4.
In case more functionally is required, for example, internet access, the dynamic link‑local
addresses cannot be used. In this case PRAESENSA devices and PCs need to be connected to
a DHCP‑server and gateway to provide internet access.
–
Notice!
When a DHCP‑server is added to an existing PRAESENSA network in which the devices
already have a Link‑Local IP‑address, then these devices will query a new IP‑address from the
DHCP‑server and get a new address assigned. This results in temporary network disconnects.
When a DHCP‑server is removed from an existing PRAESENSA network, initially all devices will
continue to work with their assigned IP‑addresses. However, when the lease time expires,
they will revert back to a Link‑Local IP‑address. Since every device will do this at a different
moment, this will lead to system instability for a prolonged time. It is better to switch off the
power to the system, remove the DHCP‑server and switch the system on again.
2020-09 | V1.20 | PRAESENSA 1.20
Right click the Windows Start button and click Network connections. A new screen
appears:
Click > Change adapter options > Select > Ethernet > click Properties. A new screen
appears:
Click Internet Protocol Version 4 (TCP/IPv4) > click Properties. A new screen appears:
Enable (checkmark) > Obtain an IP‑address automatically, and enable (checkmark) >
Obtain DNS‑server address automatically, and then click > OK.
If the PRAESENSA system will become part of a locally present network, contact your
local IT department for how to set up the network:
–
The DHCP‑server has to comply with RFC 4676 and must be able to handle 500
requests per 30 seconds. A consumer grade DHCP‑server as is used in most home
router/wireless access points is not able to comply with this requirement and will
cause unexpected and unrequested behavior.
–
The DHCP‑server functionality of Windows server 2012 R2 and Windows server 2016
server does comply with these requirements.
–
The PRAESENSA system service uses ports 9401 (used for non-secure connections)
and 9403 (used for secure connections) with the Open Interface and port 19451
with the PRAESENSA Logging Server applications for communication. When using
the PRAESENSA Logging Server, please make sure that port 19451 is not used by
any other application, otherwise it will not start.
Configuration manual
PRAESENSA
Bosch Security Systems B.V.
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