14
Figure 9 Connecting the grounding cable to the grounding hole of router
NOTE:
•
Make sure the resistance reading between router chassis and the ground is smaller than 5 ohms.
•
To guarantee the grounding effect, use the grounding cable provided with the router to connect to
the grounding strip in the equipment room as long as possible.
Installing 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.
•
When the router is installed with two MPUs, the standby MPU is hot swappable. When the router
is installed with one MPU, the MPU is not hot swappable.
•
To avoid hardware damage, do not hot swap a FIP or SAP/OAP during the booting process of an
MPU (with the RUN LED fast flashing).
