Bosch PRAESENSA PRA-SCL Configuration Manual page 71

PRAESENSA
Item
Virtual Host ID (CARP VHID) Selection
IP‑address
Netmask
Group IP‑address
Submit
* System controller redundancy
It is possible to have a primary (duty) and a secondary (standby) system controller in a single
system, configured as a redundant pair. This to avoid that an PRAESENSA system becomes
non‑functional when an system controller fails. By default (on startup), the primary system
controller will become the duty system controller, while the secondary will be the standby
system controller. In operation, the primary system controller will copy all required
configuration settings, messages, event logs and device status information to the secondary
system controller.
Both system controllers can be connected via dual redundant connections to the network.
Caution!
Be aware that when start configuring redundancy, the secondary (standby) system controller
!
is "reset to factory default" first (see System controller, page 43 > Rear panel indicators and
controls). This to avoid that a secondary system controller refuses to be configured.
Bosch Security Systems B.V.
Value Description
Common Address Redundancy Protocol
(CARP) allows multiple hosts to share the
same IP‑address and Virtual Host ID (VHID).
1 is selected by default and is linked with the
primary (duty) system controller. Unless
another system controller will be acting as
the primary one, selection of another number
than 1, is not recommended.
Fixed This is the IP‑address of the primary (duty)
system controller. The IP‑address is fixed,
and cannot be changed here.
Default This is the Netmask of the primary (duty)
system controller. The Netmask is fixed, and
cannot be changed here.
Enter address The group IP‑address is used to link the pair
of system controllers. The first part of the
IP‑address is of the IP‑address (range) of the
primary (duty) system controller, it is fixed,
and cannot be changed here. The second part
of the IP‑address is free to enter but must be
free available, and within the same IP‑address
range of the primary system controller.
Button Click the Submit button to store the settings:
Notice that you always have to Save the
configuration. See Save configuration, page
102
Configuration manual
Configure the system | en
2020-09 | V1.20 | PRAESENSA 1.20
71