5
The MSR 56-60 and MSR 56-80 routers support the MPU-100 and MPU-100-X1. The MPU
replacement procedure is similar for the MSR 56-60 and MSR 56-80 routers. The following
procedure describes replacing an MPU-100 on an MSR 56-60 router.
To replace an MPU-100 on an MSR 56-60 router:
1.
Unmount the file systems and wait until the system outputs a message that the file systems
have been unmounted.
If no external CF card is installed on the MPU, execute the
umount cfa0:
command in user
view to unmount the file system.
If an external CF card is installed on the MPU, execute the
umount cfa0:
and
umount cfb0:
commands in user view to unmount the file systems.
If the router is powered off, skip this step.
2.
Use a Phillips screwdriver to loosen the captive screws of the MPU until the spring pressure is
released.
3.
Pivot the ejector levers of the MPU outward, and gently pull the MPU out of the slot.
4.
Install a new MPU. For the installation procedure, see "Installing the router."
Figure 6 Removing the MPU-100
Replacing a VPM
IMPORTANT:
Before you replace a VPM, remove the SPU from the chassis. For information about removing an
SPU, see "
Only the SPU-100, SPU-200, and SPU-300 service modules support VPMs.
VPM (Voice Processing Module) functions to implement the encryption/decryption, EC and CNG of
voices. The following types of VPM modules are available on the MSR 5600 routers:
•
256-channel voice processing module (256-VPM)
•
512-channel voice processing module (512-VPM)