No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Dust-proof alarm would not be resume after the clear on NE40E

Publication Date:  2014-05-08 Views:  36 Downloads:  0
Issue Description

version:(NE40E&80E V600R001C00SPC800)

patch:v600r001c00sph062.pat

   There was dustproof and a lot of temperature alarm on the NE40E device as following . the alarm remind to clean the air filter ,and then reset the time of dustproof by command  

500    Critical   14-01-07  23:45:30    The air filter is failed, Maybe it is

                                        not cleaned as scheduled. Please clean

                                         it and run the reset dustproof run-ti

                                        me command

501    Critical   14-01-08  08:21:10    The air filter is failed, Maybe it is

                                        not cleaned as scheduled. Please clean

                                         it and run the reset dustproof run-ti

                                        me command, Resume

502    Critical   14-01-14  07:45:30    The air filter is failed, Maybe it is

                                        not cleaned as scheduled. Please clean

                                         it and run the reset dustproof run-ti

                                        me command

503    Alert      14-01-23  19:46:33    The address7,channel0  temperature sen

                                        sor of SlotID 2(entity) exceed upper m

                                        inor limit

504    Alert      14-01-23  19:58:08    The address6,channel0  temperature sen

                                        sor of SlotID 1(entity) exceed upper m

                                        inor limit

505    Alert      14-01-23  20:45:10    The address7,channel0  temperature sen

                                        sor of SlotID 2(entity) exceed upper m

                                        inor limit, Resume

506    Alert      14-01-23  20:53:16    The address6,channel0  temperature sen

                                        sor of SlotID 1(entit

 

Handling Process

The customer went to the site ,and clear the air filter as the guide book Instructions for Cleaning the Air Filter of the NE5000E&NE80E&NE40E》。

Then the customer run the following command to reset the dust proof time. After that the alarm resumed .

Apr 13 2014 08:58:19 GSA8-Kahamis-702-NE40E-2 %%01SHELL/5/CMDRECORD(l):Record command information. (Task=VT0 , Ip=172.20.43.136, User=huawei, Command="reset dustproof run-time")

Apr 13 2014 08:58:19 GSA8-Kahamis-702-NE40E-2 SRM_BASE/1/ENTITYRESUME: OID 1.3.6.1.4.1.2011.5.25.129.2.1.10 Physical entity is detected resumed from failure. (EntityPhysicalIndex=16777216, BaseTrapSeverity=6, BaseTrapProbableCause=67995, BaseTrapEventType=5, EntPhysicalContainedIn=0, EntPhysicalName="TSR_HALFLow frame", RelativeResource="", ReasonDescription="The air filter is failed, Maybe it is not cleaned as scheduled. Please clean it and run the reset dustproof run-time command, Resume")

6 days later ,the alarm came out again ,just as following.

=====================================================

  ===============display alarm all===============

=====================================================

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

Index  Level      Date      Time                        Info

 

1      Critical   14-04-19  07:45:29    The air filter is failed, Maybe it is

                                        not cleaned as scheduled. Please clean

                                         it and run the reset dustproof run-ti

                                        me command

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

The customer operate as the guide ,why the alarm came out again ?

After analyzing ,we find the dust proof alarm policy was as following ; it came form the FAQs About Air Filter Alarms on the NE5000E&NE80E&NE40E V1.0.doc

The average temperature of each LPU is checked every two hours. If the average temperature of any LPU exceeds the upper threshold for six or more times one day, and this situation lasts six consecutive days, an air filter alarm will be displayed.

Threshold temperatures vary according to board types. The threshold temperature of LPUFs, LPUNs, and LPUKs is 57ºC, and the threshold temperature of other LPUs is 50ºC. Air filter alarms are not generated on MPUs and SFUs.

 

Check the temperature on the board. As the following shows , after calculation ,the average temperature of the LPU1 was 59.the LPU1 was a LPUK board ,its  average temperature was  higher than the defined 57 by dust proof alarm policy.

================================================================  

  ===============display temperature slot 1===============

================================================================

Base-Board, Unit:C, Slot1

PCB    I2C Addr Chl  Status  Minor Major Fatal Adj_speed Temp

                                               TMin Tmax (C) 

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

LPUK   1   0    0    NORMAL  70    80    90    65   70   61               

LPUK   1   1    0    NORMAL  76    85    95    65   75   54       

LPUK   1   2    0    NORMAL  73    83    93    63   73   58       

LPUK   1   4    0    NORMAL  70    80    90    60   70   60       

LPUK   1   5    0    NORMAL  70    80    90    60   70   54       

LPUK   1   6    0    NORMAL  70    80    90    60   70   64        

LPUK   1   7    0    NORMAL  66    75    80    60   66   64       

LPUK   2   76   2    NORMAL  90    96    102   80   90   63      

EBGE   3   73   0    NORMAL  75    85    91    60   70   37       

EBGE   3   74   0    NORMAL  80    90    96    65   75   36       

EBGF   4   73   0    NORMAL  75    85    91    60   70   32       

EBGF   4   74   0    NORMAL  80    90    96    65   75   36       

////after calculation ,the average temperature of the LPU1 was 59℃。

 

So it is clear now ,even the customer had clear the dust proof ,and the temperature decreased to a point which is lower than the high temperature alarm threshold . but the average tepmeraure of the LPU board is still high than 57ºC.

Root Cause
Even the customer had clear the dust proof ,and the temperature decreased to a point which is lower than the high temperature alarm threshold . but the average tepmeraure of the LPU board is still high than 57ºC. so there was a alarm again.
Solution

1、 Decreasing the alarm in the equipment room.

Suggestions

Reference

1Instructions for Cleaning the Air Filter of the NE5000E&NE80E&NE40E》。Form W3

2FAQs About Air Filter Alarms on the NE5000E&NE80E&NE40E V1.0.docform W3

END