Chapter 10 Unit Configuration
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Ellipse 3000 Release 3.0, Rev. B
Redundancy Sub-Menu/Tab
10.6 Redundancy
Sub-Menu/Tab
In order to ensure the continuous transmission of video/data streams, transmitting networks
employ various protection or redundancy options. Redundancy solutions are implemented where
high availability is required. Redundancy solutions provide various levels of assurance (power
supply versus device redundancy) and are application dependent.
This section discusses the redundancy solution that relates to device redundancy. The
redundancy mechanism is basically a 1:1 device redundancy and it protects from severe failures
and provides a high level of assurance.
The Ellipse 3100/3200 supports device 1:1 hot:warm redundancy. Use the redundancy menu/tab
to configure device redundancy.
Primary and backup devices are connected via the management and MPE ports.
Automatic mode is the normal way of using redundancy. The primary Ellipse 3000 is active and
the backup Ellipse 3000 is inactive. You can use many redundancy pairs by using a different group
number for each pair. You can change the device mode but not the device state. At least one
critical alarm must be set to use auto redundancy mode.
Automatic Mode
When a critical alarm is triggered, the backup Ellipse 3000 takes over from the primary Ellipse
3000. You cannot change the redundancy mode for an inactive primary or for an active backup. In
the cases of an inactive primary and an active backup, you first need to change the device roles so
that the primary is the active and the backup is the inactive and change mode to
None
.
When using Automatic mode redundancy, the most common way to force a redundancy switch is
to unplug the video input cable. The backup Ellipse automatically becomes active when the
primary device has no video input, as long as you have a related input alarm configured as critical.
Manual Mode
You might manually perform a redundancy switch because:
■
You received notification of a service-affecting alarm on a primary device.
■
An automatic redundancy switch occurred, and now you are ready to put the recovered device
back online.
■
You want to take a device offline temporarily.
