67
Replacing an MPU
CAUTION:
To avoid system failure, make sure the software versions of the active MPU and standby MPU are
the same.
•
For a version lower than R7103, the system checks the software versions of the active MPU and
standby MPU (if any). If they are inconsistent, the standby MPU will not start. You can use the
ha
slave-ignore-version-check
command to force the system to ignore version check of
the standby MPU.
•
For R7103 and higher versions, the standby MPU (if any) automatically synchronizes the
software version from the active MPU to ensure that they are the same version.
Prerequisites
1.
If the router is configured with only one MPU, make sure all power sources to the router are
turned off before replacing the MPU.
2.
If the router is configured with two MPUs, make sure both MPUs operate correctly before
replacing an MPU.
{
As a best practice to replace the active MPU, execute the
reboot
command in the system
view of the active MPU to trigger an active and standby switchover. For more information
about the
reboot
command, see the relevant command reference.
{
To replace the standby MPU, you can remove it immediately.
Replacing an RPE-X1/RPE-X3/RPE-X5/RPE-X5E MPU
The replacement procedures for the RPE-X1, RPE-X3, RPE-X5, and RPE-X5E MPUs are the same.
This example uses an RPE-X1.
To replace an RPE-X1 MPU:
1.
Determine the MPU to be removed. This section takes the MPU in slot 1 as an example.
2.
Loosen the captive screws of the MPU until all spring pressure is released.
3.
Holding the ejector levers of the MPU with both hands, pull the ejector levers outward, and
gently pull the MPU out of the slot along the slide rails.
Figure 73 Pulling the RPE-X1 MPU out of the slot