Low Voltage Alarms Were Reported on an NE80E

Created Mar 14, 2016 00:20:30Latest reply Mar 14, 2016 13:38:39 1268 2 0 0
On an NE80E V300R003C02B608, the following alarm information was returned:

<NE80E>disp alarm all

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

Index    Level        Date        Time                  Info      

 

1        Error        11-11-08    05:14:20    The address43,channel2  voltage

                                               sensor of SlotID4 PIC1(entity)

                                              exceed lower major limit



<NE80E>disp alarm all

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

Index    Level        Date        Time                  Info      

 

1        Error        11-11-08    05:14:20    The address43,channel2  voltage

                                               sensor of SlotID4 PIC1(entity)

                                              exceed lower major limit
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yolanda_turner     Created Mar 14, 2016 13:38:39 Helpful(0) Helpful(0)

Huawei ran the display CPU command to check the CPU usage details.

<JL_ERJU_NE80E>display cpu 

===== Current CPU usage info =====

CPU Usage Stat. Cycle: 41 (Second)

CPU Usage            : 80% Max: 100%

CPU Usage Stat. Time : 2007-01-14  11:31:11

CPU Usage Stat. Tick : 0x14dd5(CPU Tick High) 0xc29237ba(CPU Tick Low)

Actual Stat. Cycle   : 0x0(CPU Tick High) 0x52d6f3c1(CPU Tick Low)

TaskName        CPU        Runtime(CPU Tick High/CPU Tick Low)

VIDL            20%               0/4b0cc55a

TICK             0%               0/  3fec31

IPCR             0%               0/   5c1d9

VPR             0%               0/  654822

VPS             0%               0/   c4dc1

Ecm             0%               0/   f62bf

IPCQ             0%               0/  2789e8

RPCQ             0%               0/   24f9b

STND             0%               0/   f1a21

CFA             0%               0/   2ce2d

INFO             0%               0/    17e0

ROUT             73%               0/ 2c53b5a

LSPM             0%               0/  879998

LDP             1%               0/ 12d4d19

RSVP             0%               0/   6df3d

CSPF             0%               0/  26003d

TNLM             0%               0/   51884

SRM             0%               0/  168be9

LOAD             0%               0/    d34a

DIAG             0%               0/   17590

CAN             0%               0/   38950

DNTM             0%               0/    3d7d

FIB             1%               0/ 103ed78

SOCK             0%               0/  287931

VTYD             0%               0/   7f743

IPSP             0%               0/    10e9

IKE             0%               0/    1c73

L2TP             0%               0/   147cd

AGNT             0%               0/    1000

TRAP             0%               0/   4ca1d

MDMT             0%               0/  25398f

NTPT             0%               0/  477cb1

TAC             0%               0/   9fc73

UCM             0%               0/    2372

Huawei ran the display ospf brief command on the NE80E and found that SPF calculation was performed frequently.



         OSPF Process 1 with Router ID 61.138.129.184

                 OSPF Protocol Information

RouterID: 61.138.129.184   Border Router:  AREA  AS 

Route Tag: 0 

Multi-VPN-Instance is not enabled

Applications Supported: MPLS Traffic-Engineering 

Spf-schedule-interval: 5

Default ASE parameters: Metric: 1 Tag: 1 Type: 2

Route Preference: 10 

ASE Route Preference: 150 

SPF Computation Count: 1557838 

RFC 1583 Compatible

OSPF is in protocol hot standby state: Real-Time Backup

Area Count: 2   Nssa Area Count: 0 

ExChange/Loading Neighbors: 0





Huawei ran the display ospf error  command and found that the number of OSPF interface down times increased.



         OSPF Process 1 with Router ID 61.138.129.184

                 OSPF packet error statistics 

0   : IP: received my own packet     0   : OSPF bad packet 

0   : OSPF bad version               0   : OSPF bad checksum 

170300 : OSPF bad area id               0   : OSPF drop on unnumber interface 

0   : OSPF bad virtual link          0   : OSPF bad authentication type 

0   : OSPF bad authentication key    0   : OSPF packet too small 

0   : OSPF packet size > ip length   0   : OSPF transmit error  

765024 : OSPF interface down            13  : OSPF unknown neighbor 

0   : HELLO: netmask mismatch        0   : HELLO: hello timer mismatch 

0   : HELLO: dead timer mismatch     0   : HELLO: extern option mismatch 

4   : HELLO: router id confusion     0   : HELLO: virtual neighbor unknown 

0   : HELLO: NBMA neighbor unknown   1   : DD: neighbor state low 

0   : DD: router id confusion        0   : DD: extern option mismatch 

0   : DD: unknown LSA type           1   : LS ACK: neighbor state low 

634989 : LS ACK: bad ack                0   : LS ACK: duplicate ack 

0   : LS ACK: unknown LSA type       0   : LS REQ: neighbor state low 

0   : LS REQ: empty request          0   : LS REQ: bad request 

0   : LS UPD: LSA checksum bad       181627 : LS UPD: received less recent LSA 



Huawei found that a port on the NE80E alternated frequently between Up and Down states. As a result, the OSPF SPF calculation was performed repeatedly, which caused high CPU usage. Root Cause

The possible causes of the issue were as follows:

1. The system control board received a large number of packets.

2. Repeated routing calculations were performed. Solution

Shut down the port that alternated frequently between Up and Down states.

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jack_6     Created Mar 14, 2016 13:38:39 Helpful(0) Helpful(0)

To address the issue, Huawei performed the following operations and observed the following information:

1. Ran the display alarm all command and found the low voltage alarm.

<NE80E>disp alarm all

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

Index    Level        Date        Time                  Info      

 

1        Error        11-11-08    05:14:20    The address43,channel2  voltage

                                               sensor of SlotID4 PIC1(entity)

                                              exceed lower major limit

2. Ran the disp voltage slot 4 command and found that the voltage on channel 2 of PIC0 and PIC1 was low.

PIC0, I2CID:3  Address:43  Unit:V

Channel Status Required Low_Alam_Threshold  High_Alam_Threshold Voltage   Ratio

                          Major     Fatal     Major     Fatal              

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

0       NORMAL   1.20     1.14      1.08      1.26      1.32      1.20     1.00

1       NORMAL   1.80     1.71      1.62      1.89      1.98      1.80     1.00

2       MAJOR    3.43     3.25      3.10      3.60      3.77      3.25     0.58

3       NORMAL   5.00     4.50      4.00      5.26      5.50      4.97     0.38

 

PIC1, I2CID:4  Address:43  Unit:V

Channel Status Required Low_Alam_Threshold  High_Alam_Threshold Voltage   Ratio

                          Major     Fatal     Major     Fatal              

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

0       NORMAL   1.20     1.14      1.08      1.26      1.32      1.20     1.00

1       NORMAL   1.80     1.71      1.62      1.89      1.98      1.81     1.00

2       MAJOR    3.43     3.25      3.10      3.60      3.77      3.25     0.58

3       NORMAL   5.00     4.50      4.00      5.26      5.50      4.97     0.38

Huawei concluded that the alarms were reported possibly because the voltage on the specific channel exceeded the lower alarm threshold or because the device mistakenly triggered alarms. Root Cause

The software incorrectly set the lower alarm threshold and then unexpected alarms were triggered. Solution

The issue is a known false alarm reporting.

In V300R003C02B697SPH038, the subcard alarm threshold has been optimized so the lower voltage alarm threshold was changed from 3.25 V to 3.10 V. No patch is available for V300R0003C02B608 to resolve the issue.

:                        

L1XX   3   43   2   NORMAL 3.30     3.10    2.95    3.55    3.70    3.31  0.58            

It is recommended that you upgrade the product version to resolve this issue.

If an upgrade cannot be performed, run related command to clear the alarms. Replacing the board is not necessary.

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