3com S7906E Guide De Référence

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If the ONU corresponding to the ONU port is not online (because the ONU port is not bound with 
any ONU or the extended OAM connection fails on the bound ONU), the update process will not 
start until the ONU goes online. 
 
  
 
After the update command is issued, the OLT will wait 15 to 20 seconds before executing the 
command. This allows for batch updating and saves system resources. 
 
The update onu filename command is a configuration command, that is, after the update onu 
filename command is executed, it will be saved in the configuration file of the device. If the ONU 
port corresponding to an ONU that goes online is created before the update command is used, the 
ONU will be updated directly (if it matches the update files). Otherwise, the ONU will not be 
updated. To update only the current ONUs online but not the offline ONUs or subsequently 
registered ONUs, execute the update onu filename command, and use the undo update onu 
command after you make sure that all online ONUs have been updated.  
 
Any power failure during the ONU software upgrade may cause update failure. 
 
Once the update file is transferred to the ONU, the ONU restarts automatically to complete the 
update. 
 
Examples 
# Update an ONU.  
<Sysname> system-view 
[Sysname] interface onu 3/0/1:1 
[Sysname-Onu3/0/1:1] update onu filename file.app 
Update flash:/file.app?[Y/N] 
# To start the upgrade, enter Y; to abort, enter N. The following example shows the output after you 
enter Y
Info: Download file to onu may take a long time, please wait... 
 Please wait while the firmware is being burnt, and check the software version after 
re-registration! 
update onu onu-type 
Syntax 
update onu onu-type onu-type filename file-url 
undo update onu onu-type onu-type 
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Default Level 
2: System level