
About Dual (Redundant) VNM EC 200s
For applications where it is essential to maintain system control, a second VNM EC 200
can be added with both units configured as part of a redundant pair (see figure 2). In a
redundant system, an internal database stores the current system configuration. The internal
database is held on both units.
A crossover network cable is fitted to the LAN B (eth1) port of each VNM EC 200. This
connection is used to monitor the health of the system.
NOTES:
•
The crossover connection must use a subnet that is different from the main
VN-Matrix network (LAN A [eth0]).
•
The crossover cable must be directly connected between the two VNM EC 200
devices without using extra network equipment (such as a switch or router).
When the VN-Matrix system is started, the VNM EC 200s communicate with each other
and one is chosen as the controller for the system. While the VN-Matrix system runs, each
VNM EC 200 continually monitors the health of the other. If the primary device (acting as
the system controller) fails, the secondary unit takes over control of the VN-Matrix system.
Transparent operation and communication within the system is maintained.
The two controllers in a redundant system are known as a "cluster". Each device has its
own unique physical IP address (LAN A [eth0]) assigned. A third IP address, known as the
cluster address, is also assigned. The cluster IP address is used as the controller IP address
for all of the VN-Matrix devices in the system.
For information on setting up a dual (redundant) VNM EC 200 system, see the
(Redundant) Controller Configuration
Network
VN-MATRIX 225 SERIES
RGB/DVI OVER IP
LAN-1
LAN-2
STATUS
VN-MATRIX 225 SERIES
RGB/DVI OVER IP
LAN-1
LAN-2
STATUS
VN-MATRIX 225 SERIES
RGB/DVI OVER IP
LAN-1
LAN-2
STATUS
VN-MATRIX 225 SERIES
RGB/DVI OVER IP
LAN-1
LAN-2
STATUS
VN-MATRIX 225 SERIES
RGB/DVI OVER IP
LAN-1
LAN-2
STATUS
VN-MATRIX 225 SERIES
RGB/DVI OVER IP
LAN-1
LAN-2
STATUS
VNM EC 200
VNM ENTERPRISE CONTROLLER
CONFIG
PWR
SSD
LAN
A
LAN
B
VNM EC 200
VNM ENTERPRISE CONTROLLER
CONFIG
PWR
SSD
LAN
A
LAN
B
Browser Based User
Control
Multicast Enabled
Network
VNM Enterprise Controller 200 (Primary)
TouchLink
™
Touchpanel
External User Control
Multiple VNM Series Devices
VNM Enterprise Controller 200 (Secondary)
LAN A (eth
0
) Physical Port
(VN-Matrix Network)
192.168.254.254
LAN A (eth
0
) Physical Port
(VN-Matrix Network)
192.168.254.253
Cluster Address
192.168.254.25
0
Crossover
Cable
LAN B (eth1)
Cluster Port
LAN B (eth1)
Cluster Port
192.168.253.
0
Figure 2.
Dual (Redundant) VNM EC 200 System
VNM EC 200 • Introduction
3
Содержание VNM EC 200
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