System information

3.4 Notes on updating the software
(1) Notes on transferring the update file
 A
file must be transferred via FTP in binary mode. Otherwise, execution of the ppupdate
command fails.
 Transfer the file named k.img to the directory /usr/var/update in the Switch. If the file
already exists, overwrite it. If the file is transferred to the wrong location or with an incorrect
name, delete the file, and then transfer the file correctly.
(2) Notes on executing the ppupdate command
 Do no
t delete the k.img file unless it is specified in the procedure. The file cannot be restored
when the command abnormally ends.
 In a BCU, CSU, or MSU single configuration, the Switch restarts after the update. In a BCU,
CSU, or MSU redundant configuration, system switching is performed during the update
process. During the system switchover, communication via the Switch is temporarily suspended.
In addition, after the update, the active and standby roles are switched between the boards of the
active and standby systems.
 In a BCU, CSU, or MSU redundant configuration, a "no-stop" software update functionality is
available by which software can be updated without interrupting communication. For details
about conditions for the no-stop software update functionality, see the Configuration Guide.
 In a BCU, CSU, or MSU redundant configuration, perform a system switchover when the status
of the standby system is standby or software version discord. The status of the
standby system can be checked by using the show system command.
 Do not turn the power off while updating the software. If the power is turned off, restart it and
conduct the procedure again from the start.
 When the update is performed in a BCU, CSU, or MSU redundant configuration, the following
log data might be collected from a system other than the updated system. (This does not imply
that a problem has occurred.)
For the AX6700S series:
E5 BCU xxxxxxxx 2314:xxxxxxxxxxxx Fatal error detected on other system.
This system (BCUx) is active.
For the AX6600S series:
E5 CSU xxxxxxxx 2314:xxxxxxxxxxxx Fatal error detected on other system.
This system (CSUx) is active.
For the AX6300S series:
E5 MSU xxxxxxxx 2314:xxxxxxxxxxxx Fatal error detected on other system.
This system (MSUx) is active.
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