How To Change Over Cpu Card - NEC Univerge SV8500 Operation And Maintenance Manual

8.1.3

How to Change over CPU Card

CPU card, when it is provided in a dual configuration, can be switched over by
one of the operations shown in the table below. When the system of CPU is
changed over, the ACT/STBY of GT (in TSWR) is also changed over (4-IMG)
.
TYPE
(a) Changeover by CMOD
(b) Changeover by key operation
While the changeover of the CPU card is in progress, any call attempt is rejected. Already established
Note 1:
calls, however, will not be affected.
(a) CPU Changeover by CMOD Command
See CHAPTER 7 Maintenance Commands
(b) CPU Changeover by Key Operation
To change over the ACT/STBY of CPU card, CMOD command is normally used. However, if the com-
mand cannot be used for some reason, do this changeover by the key operation.
Improper key operations may result in a system down. Operate the related keys, applying
WARNING
extreme care.
[Start]
Replacement procedure explained here assumes that the system is operating as follows:
• CPU card (#0) is placed in ACT mode
• CPU card (#1) is placed in STBY mode
Therefore, in the following explanation, replace #1 with #0 as needed when performing this procedure on
the actual system.
OPERATIONS
Use CMOD command.
Turn off (downward) MBR key (MODE switch - 4) on the ACT CPU
card. After a few seconds, return it to the previous position.
for more details.
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CHAPTER 2 Operations of SV8500 Server
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
REMARKS