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FAQ-Whether It is Normal that NPU2 is Abnormal after Upgrade of the NE20E

Publication Date:  2012-07-27 Views:  60 Downloads:  0
Issue Description
Q:
NE20E is upgraded from NE20&NE20E-VRP5.30-23138009 to V200R005C02B184. Run the diap dev command. It is found that NPU2 is in Abnormal state. Is this phenomenon normal?
            
Alarm Information
Null
      
Handling Process
A:
The services run normally after upgrade. However, using the disp dev command finds that NPU2 is in Abnormal state, as follows: 
<Eventis-Almaty>dis dev
NE20E-8's Device status:
Slot #    Type        Online    Status      
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
9         RPU1        Present   Normal      
1         8FE         Present   Normal      
2         8FE         Present   Normal      
4         8FE         Present   Normal      
6         8CE1        Present   Normal      
8         8CE1        Present   Normal      
10        RPU2        Present   Normal      
11        NPU1        Present   Normal      
12        NPU2        Present   Abnormal    
13        PWR1(DC)    Present   Normal      
14        PWR2(DC)    Present   Normal      
17        FAN         Present   Normal    
The phenomena is normal.
For the NE20E, RPU has hot and cold backups. When the device is in cold backup, the slave NP does not finish the startup (the device will continue the startup after it completes the master/slave switchover for NPs through NPHA), and it is in the Abnormal state. It displays the actual state. It is not recommended to use cold backup at V200R005, but the hot backup. In the hot backup mode, two NPs will finish the startup, and they are in the Normal state. 
Run the following command to check the backup state of RPU: 
[Quidway]dis double-system status                                               
RPU:                                                                            
Master slot:  9                                                                 
Slave  slot: 10                                                                 
                                                                                
NPU:                                                                            
Master slot: 11                                                                 
Slave  slot: 12                                                                 
                                                                                
Backup status:                                                                  
Master: cold backup                                                             
Slave : cold backup                                                             
                                                                                
Control relation:                                                               
RPU(slot)   Controled NPU(slot)                                                 
 9              11
10              12        
The device is defaulted to cold backup in startup. The following command can be used to change it: 
[Quidway]double-system backup  warm 
The parameter warm means hot backup. 
Noticeably, the change takes effect after reset. 
Also, you can set the backup state in Bootrom during startup of the system, as follows: 
   Go on Checking the Sdram? Yes or No(Y/N):
   Press CTRL+A to Stop AutoBoot... 
   Starting...  3
   
   ===============<SMALL-BOOTROM MENU(Ver  5.00)>===============
   | <1> Modify Serial Interface Parameter                 |
   | <2> Update LargeBootrom                               |
   | <3> Update Hac-Logic                                  |
   | <4> Boot Main System                                  |
   | <5> Sdram Test                                        |
   | <6> Set Cold Backup Mode                              |
   | <7> Set Warm Backup Mode                              |
   | <8> Display the Current Cold-Warm-Backup Mode         |     =============================================================
   Enter your choice(1-8): 7                                                       
   The cold-warm-backup mode is set to WARM.     
In this situation, you have to configure two NPUs. 
Change it to hot backup on site. After reset, check the state of NPU2; it is in the Normal state.
      
Root Cause
Null
      
Suggestions
Null
      

END