Module Descriptions
GARD 8000 SYS RFL Electronics
April 23, 2015 6-9 973.334.3100
LED indicator DS3, located at the card edge of the module, shows the state of redundancy control of a
Controller Module. The meaning of the display is described in Table 6-2.
Mode Switch
A request to take the Controller module off-line (inactive) is made by moving card-edge switch SW2
from “Normal” position to “Disable” position. This is equivalent to creating an on-board failure, and
will be indicated by the appropriate color of indicator DS3 (color will change from Green to Orange).
If the rules of redundant-mode operation are satisfied, the Controller will become inactive and the
other module will take over.
It is important to remember that even though the Controller will be in a failed state, it may be actually
made inactive only if a good companion module exists.
The rules of operation are designed to enforce the continuity of operation for the whole system.
Therefore, a module cannot be made inactive if the other Controller is in a fault condition or does not
exist.
Returning SW2 to the “Normal” position will clear the on-board fault condition. It does not
automatically make the module active. As per the rules of operation, the Controller Module becomes
active only if the other module fails or is disabled.
Configuration Mirroring
An inactive Controller module will retrieve (mirror) a copy of a system configuration from the active
module. This process starts immediately after power-up or reset of the Controller and continues as long
as the module remains inactive.
When manually forcing a switch between redundant controllers (such as when installing a new module
from a set of spares), the user should observe whether the first configuration transfer completed, as
indicated by DS3 (see table 6-2). If switched too early, the newly active Controller may be configured
incorrectly.
After first successful mirror, the inactive Controller will contain a copy of configuration that is no
more than one mirroring cycle behind the active module.
Web Page, Controller Card, Status Color Codes
Refer to Table 6-3 for the Web Page, Controller Card, status color codes. The first column in the table
indicates the background color of Controller Card slots 10 and 11in the Chassis Configuration Status
Web page, shown in Figure 6-4. The background color can be gray, green, red or yellow, and the text
color can be either black or yellow. Once the background color and text color are determined, refer to
the second column of the table to determine the status of the Controller Card modules in slots 10 and
11.
Table 6-3. Web Page, Controller Card, Status Color Codes
Slot 10 or 11 Controller Card Background Color
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