Troubleshooting guide

3. Troubleshooting Functional Failures During Operation
23
No. Items to check and
commands
Items to check
3 If the hardware revision is
shown as a number other
than 1 and 9
 If no-software is specified for the backup operation command,
no-software must be specified for the restore operation
command as well.
 If software for an AX1250S or AX1230S switch is contained in the
backup file, Switch information other than the software is restored.
 A backup file created by using the backup operation command with
the AX1230 option specified is created as the Switch information, but
without the software. To include software for AX1240S switches,
create a backup file without specifying any options.
 Check the backup file, and then execute the restore operation
command again.
 If an error still occurs, the backup file might be corrupted.
For all other cases, see No. 4.
4 Try to execute the show
critical-logging
command.
 When FROM write fail
[cnt=xxxxxxxx,size=xxxxxxxx,err=xxxxxxxx] is obtained,
execute the restore operation command again. If an error still
occurs, the internal flash memory might be corrupted. Replace the
Switch.
3.3.6 Saving or restoring the binding database is not possible
For the actions to be taken when the binding database used for DHCP snooping cannot be
saved or restored, see
3.3.4 3.5.4 Failures when the DHCP snooping functionality is used.