SPU board cannot register successfully after USG9100 star up

Publication Date:  2012-09-14 Views:  116 Downloads:  0
Issue Description
SPU board cannot register successfully after USG9100 star up, and the alarm information for CRC wrong appeared. The information as shows below:
<USG9100>dis  device

Secoway USG9100's Device status:

Slot #    Type    Online    Register      Status      Primary

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1         MSU     Present   NA            Normal      Master 

3         SPUA    Present   Unregistered  Abnormal    NA     

7         PWR     Present   NA            Normal      NA     

8         PWR     Present   NA            Normal      NA     

9         FAN     Present   Registered    Normal      NA     

10        FAN     Present   Registered    Normal      NA     

11        SMM     Present   NA            Normal      Master 



MSU receive request msg from slot 3. 2011/8/31 14:37:38

Loading package flash1:/usg9100v100r001c00spc600.cc from raw.

ERROR: AllCRC Checksum Is Incorrect!

Package check fail.

Alarm Information
NULL 
Handling Process
Reboot the equipment, re-load the version. Complete the normal register for SPU board. 
Root Cause
Look up handbook related and failures information content, there are some problems in files loaded by SPU board, and CRC checkout was wrong, those lead to SPU board cannot register successfully. 
Suggestions
Nand-flash of MPU contains some damage block in a determinate probability what is decided by device. So a protective mechanism was designed, when the master was damaged and restarted, the slaver was designed to renovate files in master. 

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