Installing An Mpu - H3C SR6604 Installation Manual

3. Connect the other end of the grounding cable to the grounding strip of the rack.
Figure2-7 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
slave-ignore-version-check
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).
command to force the system to ignore version check of the
14
ha