Adding, Replacing, or Upgrading a Controller Card
6-10 SmartEdge 1200 Router Hardware Guide
Replace a Controller Card
Perform the following steps to replace a controller card:
1. Prepare for replacement:
a. Optional. If you are replacing one of a pair of controller cards, upgrade the active controller to run
the latest release of the system software.
See the Basic System Operations Guide for the SmartEdge OS for procedures to display the release
information and to upgrade the active controller to a new software release.
b. If possible, in a system with dual controller cards, ensure that the system is fully operational: the
standby controller must be fully synchronized with the active controller card. Use the show
redundancy command to display the status of the standby controller.
c. If there is a CF card installed in the controller card, dismount the device; enter the following
command in exec mode:
unmount /md
2. Put on an antistatic wrist strap (one is shipped with the system), and attach it to an appropriate grounded
surface.
3. Label and disconnect any cables from the front of the controller card being removed.
Caution Risk of data loss. Controller cards are hot swappable, but if the system configuration includes
redundant controller cards, you can disrupt traffic if you remove the active controller card. To
reduce the risk, verify that the card being removed is not the active controller (that is, the
STDBY LED is lit).
Note If the system configuration includes a single controller card, you will disrupt traffic when you
remove the card.
Note If the software release on the controller card that you are installing is different from the release
on the active controller, the active controller overwrites the release on the replacement
controller card after you complete the replacement procedure.
Caution Risk of equipment failure. Removing the controller card with its CF card without first entering
the unmount /md command (in exec mode) can permanently damage the device and cause
the kernel to crash. To reduce the risk, always enter the unmount /md command before
removing a controller card.
Caution Risk of data loss. You can lose data that is being transferred to the CF card if you enter the
unmount /md command (in exec mode) before the data transfer operation is complete. To
reduce the risk, do not enter the unmount /md command while the CF ACTIVE LED is
blinking. When the operation is complete, the LED is turned off.
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