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Page 20
TLX320 Matrix Switch Product Manual
thinklogical
Rev. I, May 2021
Safely Remove an Active Control Card or Shut Down the System
During normal, non-maintenance operation, the
Primary Control Card should always be the
Active controller for the system.
However, there may be times when other conditions
temporarily exist, such as during maintenance, updates, repairs, etc.
Although the system will run normally on the Back-up Control Card, not having a second card
eliminates the fail-over protection afforded by a redundant, two-card system.
The following commands allow the safe removal of a Control Card and the switch of activity
from one Control Card to the other without interruption of connections
Note: During normal operation, the Primary Control Card should always be the
active controller for the system.
During normal operation, the Primary or Back-up Controller can be managed via the console
port or over an SSH connection.
The HALT Command
•
Typing
halt
at the command line will perform an orderly shut-down of the active Control
Card.
•
Once the Control Card is inactive, it will stop signaling the other Control Card. This
prompts the other card to become active. This will take only a few seconds.
•
Remove any cables (LAN, RS-232, Console, etc.) from the inactive card. It can now be
safely removed from the chassis.
•
At this point, the system is now running on the Back-up Control Card.
Note: Re-inserting the Primary Control Card restores the system back to running
on the Primary Control Card. Ensure that the LAN connection to the card is
restored promptly.
The PWROFF Command
•
Typing
pwroff
at the command line prompt, from either the Primary or the Back-up
Control Card, will halt BOTH Control Cards and turn off the power to all the I/O card slots
in the system except the controllers.
Note: I/O card slot power will be turned off on the TLX320.
•
Remove the AC power cord(s) from the Matrix Switch or from the AC source for a
complete system shut-down.
•
Remove any cables (LAN, RS-232, Console, etc.) from the Control Cards.
•
The Control Cards can now be removed, swapped or replaced as needed.
Upon turn-on, the Control Card in the top or the left slot will become Primary and the Card in
either the bottom or the right slot will be the Back-up.
How to Install and Replace Modules
How to Install or Replace an Input
/
Output Card
Note: No shutdown is required prior to installing/replacing Input/Output Cards.
1
Turn the
card’s two thumbscrews counterclockwise until they disengage from the chassis. Pull the
card straight out using both handles.
Do not pull on the thumbscrews when removing the
module
– damage may occur! Use the handles!
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