ipran故障案例分析.docx
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ipran故障案例分析.docx
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ipran故障案例分析
基站闪断故障案例分析
摘要:
某IPRAN站点在运行过程中出现频繁的设备闪断故障,造成此站点下挂4个3G站、3个4G站业务频繁闪断。
背景
2016年8月24日上午在网优人员给局方维护人员打来电话,说有数个站点出现频繁断站,然后过几分钟就好;我方工程师在收到局方告知后,立即与维护人员取得联系,为了不影响局方的业务以及考核指标,决定先将此站点下挂的站点端口进行关闭处理。
问题描述及排查
1.登录到闪断的设备上,一般成环的节点很少会出现瞬断,但是不排除。
首先检查瞬断节点的收发光功率;如果没问题就逐条检查环上的其他节点的光功率。
一般情况下是光口实际收光超出临界值;
zxr10#showperf-valueinterfacegei_5/1
laser-basis-cur(mA):
6.8160
laser-basis-min(mA):
6.8160
laser-basis-max(mA):
6.8480
laser-temp-cur(deg):
39.8430
laser-temp-min(deg):
39.5620
laser-temp-max(deg):
39.8430
optical-send-cur(dBm):
-6.1650
optical-send-min(dBm):
-6.1670
optical-send-max(dBm):
-6.1650
optical-rcv-cur(dBm):
-7.5030
optical-rcv-min(dBm):
-7.5100
optical-rcv-max(dBm):
-7.5000
send-bandwidth-usage:
0.0131
rcv-bandwidth-usage:
0.0213
zxr10#showperf-valueinterfacegei_6/1
laser-basis-cur(mA):
17.7500
laser-basis-min(mA):
17.7500
laser-basis-max(mA):
17.8000
laser-temp-cur(deg):
33.2260
laser-temp-min(deg):
33.2260
laser-temp-max(deg):
33.2260
optical-send-cur(dBm):
-5.9190
optical-send-min(dBm):
-5.9190
optical-send-max(dBm):
-5.8850
optical-rcv-cur(dBm):
-7.2490
optical-rcv-min(dBm):
-7.3680
optical-rcv-max(dBm):
-7.2490
send-bandwidth-usage:
0.0016
rcv-bandwidth-usage:
0.0008
2.检查设备温度,看风扇状态:
设备温度过高会导致板卡假死,当温度降到板卡可以承受的温度的时候,板卡又会起来,所以就会出现闪断。
zxr10#showversion
ZXR10RouterOperatingSystemSoftware,ZTECorporation
ZXR10ROSVersionV4.08.34
ZXCTN6220Software,VersionZXCTN0V2.10.00P02B10,RELEASESOFTWARE
Copyright(c)2001-2014byZTECorporation
CompiledApr242015,18:
46:
39
Systemimagefilesareflash:
Systemuptimeis244day(s),16hour(s),53minute(s)
[SCCU,panel1,master]
MainProcessor:
PowerPCMPC8544Processor
SystemMemory:
1024Mbytes,SystemFLASH:
128Mbytes
SystemNVRAM:
8Kbytes,SystemTemperature:
41℃
SystemSerial:
16383,SystemBaudRate:
9600
SystemClock:
PTPstratum3
BoardType:
RSCCP2
SerialNumber:
2,PartNumber:
3
MainCPLD1Version:
V1.4,MainCPLD2Version:
V1.4
CPUCPLDVersion:
N/A,PCICPLDVersion:
N/A
FPGAVersion:
V6.1,MainPCBNumber:
101001
[SCCU,panel2,slave]
MainProcessor:
PowerPCMPC8544Processor
SystemMemory:
1024Mbytes,SystemFLASH:
128Mbytes
SystemNVRAM:
8Kbytes,SystemTemperature:
43℃
SystemSerial:
16383,SystemBaudRate:
9600
SystemClock:
PTPstratum3
BoardType:
RSCCP2
SerialNumber:
8,PartNumber:
3
MainCPLD1Version:
V1.4,MainCPLD2Version:
V1.4
CPUCPLDVersion:
N/A,PCICPLDVersion:
N/A
FPGAVersion:
V6.1,MainPCBNumber:
101001
[NPCI,panel1]
MainProcessor:
W90N740Processor
SystemMemory:
16Mbytes,SystemTemperature:
N/A
BoardType:
R4EGC,LogicBoardType:
R4EGC_ETH
PortNumber:
4
SerialNumber:
8,PartNumber:
5
MainCPLDVersion:
V1.8
FPGAVersion:
V0.8,MainPCBNumber:
081001
[NPCI,panel2]
MainProcessor:
MPC8321Processor
SystemMemory:
128Mbytes,SystemTemperature:
43℃
BoardType:
R16E1F,LogicBoardType:
(TDM+IMA)
PortNumber:
16
SerialNumber:
5,PartNumber:
3
MainCPLDVersion:
V2.3
FPGAVersion:
V2.1,MainPCBNumber:
080902
[NPCI,panel5]
MainProcessor:
W90N740Processor
SystemMemory:
16Mbytes,SystemTemperature:
43℃
BoardType:
R4EGC,LogicBoardType:
R4EGC_ETH
PortNumber:
4
SerialNumber:
0,PartNumber:
5
MainCPLDVersion:
V1.8
FPGAVersion:
V0.8,MainPCBNumber:
081001
[NPCI,panel6]
MainProcessor:
W90N740Processor
SystemMemory:
16Mbytes,SystemTemperature:
43℃
BoardType:
R4EGC,LogicBoardType:
R4EGC_ETH
PortNumber:
4
SerialNumber:
6,PartNumber:
5
MainCPLDVersion:
V1.8
FPGAVersion:
V0.8,MainPCBNumber:
081001
zxr10#showfan-information
PCBVersion:
100801
LogicalVersion:
V3.1
Fan1:
NormalWork
Fan2:
NormalWork
Fan3:
NormalWork
Fan4:
NormalWork
3.查看端口是否有错包,当端口错包累计到一定程度后,很大可能性会出现设备闪断。
zxr10#showinterfacegei_5/1
gei_5/1isup,lineprotocolisup,detectstatusisOK
Bynameisnone
Descriptionisnone
Theportisoptical
Duplexfull
Smbipg12
Smbmccbandwidth10Mbits
Mccvlanidis3024
Smbmccpriority7
Noloopback
BW1000000Kbits
Lastclearingof"showinterface"countersnever
120secondsinputrate:
2428214Bps,8820pps
120secondsoutputrate:
1571473Bps,7147pps
Interfacepeakrate:
input20166528Bpsoutput8806412Bps
Interfaceutilization:
input1%,output1%
Input:
Packets:
8Bytes:
163
Unicasts:
5Multicasts:
30086051
Broadcasts:
2LittUndersize:
0
Oversize:
0CRC-ERROR:
259107
Dropped:
2869615Fragments:
0
Jabber:
0MacRxErr:
0
Errframe:
0Disframe:
2869615
UnicErrors:
0MultiErrors:
0
BroErrors:
0GoodJumb:
2591074607
64B:
065-127B:
128-255B:
9959552083256-511B:
512-1023B:
7465987381024-Max:
8579079454
AlignErrors:
0
Output:
Packets:
7Bytes:
997
Unicasts:
7Multicasts:
30022986
Broadcasts:
4Collisions:
0
LateCollision:
0ColliTimes:
0
FlowContr:
0DeExceFrame:
0
DecolliFra:
0NonUniFrame:
30022990
ErrBytes:
0ErrFrame:
0
MacControl:
0JabberFrame:
0
GoodJumb:
167604028LittUndersize:
0
64B:
065-127B:
128-255B:
256-511B:
512-1023B:
5325916111024-Max:
604042360
Oversize:
0
zxr10#showinterfacegei_6/1
gei_6/1isup,lineprotocolisup,detectstatusisOK
Bynameisnone
Descriptionisnone
Theportisoptical
Duplexfull
Smbipg12
Smbmccbandwidth10Mbits
Mccvlanidis0
Smbmccpriority7
Noloopback
BW1000000Kbits
Lastclearingof"showinterface"countersnever
120secondsinputrate:
83450Bps,809pps
120secondsoutputrate:
150818Bps,484pps
Interfacepeakrate:
input2781929Bps,output10989989Bps
Interfaceutilization:
input0%,output0%
Input:
Packets:
Bytes:
10
Unicasts:
Multicasts:
30425156
Broadcasts:
2LittUndersize:
0
Oversize:
0CRC-ERROR:
0
Dropped:
348Fragments:
0
Jabber:
0MacRxErr:
0
Errframe:
0Disframe:
348
UnicErrors:
0MultiErrors:
0
BroErrors:
0GoodJumb:
7322682
64B:
2114280465-127B:
128-255B:
763326971256-511B:
42375277
512-1023B:
333074401024-Max:
43759574
AlignErrors:
0
Output:
Packets:
6444180948Bytes:
08
Unicasts:
6414093903Multicasts:
30087045
Broadcasts:
0Collisions:
0
LateCollision:
0ColliTimes:
0
FlowContr:
0DeExceFrame:
0
DecolliFra:
0NonUniFrame:
30087045
ErrBytes:
0ErrFrame:
0
MacControl:
0JabberFrame:
0
GoodJumb:
221826624LittUndersize:
0
64B:
065-127B:
4424687976
128-255B:
1335751052256-511B:
73425763
512-1023B:
349833271024-Max:
575332830
Oversize:
0
4.发现上联端口有错包,上联端口有错包,会导致业务频繁切换,造成业务闪断。
首先更换两端的光模块,更换后再次查看端口发现还是有错包,更换本端业务单板。
处理结果:
更换本侧业务单板后,错包消失,业务恢复正常。
闪断解决办法:
1.温度过高的问题,更换风扇即可;
2.若再次出现类似的问题,依据此方法逐步判断故障点。
3.若更换业务单板还是出现相同情况的话,更换设备。
4.更换两端设备后仍无法解决,在确定光模块没问题的情况下,让代维检查物理链路(光缆);
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