交換機埠光衰問題排查
阿新 • • 發佈：2021-08-11
操作交換機型號：HUAWEI S5730
華為交換機命令參考網址：https://support.huawei.com/enterprise/zh/doc/EDOC1100082528/d5c02456
一、檢視交換機埠狀態
[HUAWEI]display interface brief PHY: Physical *down: administratively down #down: LBDT down (l): loopback (s): spoofing (E): E-Trunk down (b): BFD down (e): ETHOAM down (dl): DLDP down (lb): LBDT block InUti/OutUti: input utility/output utility Interface PHY Protocol InUti OutUti inErrors outErrors ... ... XGigabitEthernet0/0/1 up up 0.65% 4.55% 61483940 ... ... [HUAWEI]display interface XGigabitEthernet0/0/1 | include Error Total Error: 6148874 Total Error: 0 [HUAWEI]display interface XGigabitEthernet0/0/1 | include Error Total Error: 6148874 Total Error: 0 [HUAWEI]display interface XGigabitEthernet0/0/1 | include Error Total Error: 6148875Total Error: 0 [HUAWEI]display interface XGigabitEthernet0/0/1 | include Error Total Error: 6148875 Total Error: 0 ## 發現inErrors有錯誤包，此時還不能判斷，是不是現在有錯誤包產生，因為有可能是之前的問題留下的錯誤包，等30s或者1min左右再執行一次埠狀態命令，檢視下inErrors的數量是否上漲，如果上漲了表示目前是有問題的；
二、檢視交換機日誌並過濾該埠的資訊
[HUAWEI]display logbuffer | include XGigabitEthernet0/0/1 Logging buffer configuration and contents : enabled Allowed max buffer size : 1024 Actual buffer size : 512 Channel number : 4 , Channel name : logbuffer Dropped messages : 0 Overwritten messages : 32423 Current messages : 512 Aug 11 2021 11:25:22+08:00 HUAWEI %%01SRM/3/RXPOWER_EXCEEDMINOR(l)[3]:Optical module in interface XGigabitEthernet0/0/1 exception, Rx power is too low. Aug 11 2021 11:15:21+08:00 HUAWEI %%01SRM/3/RXPOWER_EXCEEDMINOR(l)[10]:Optical module in interface XGigabitEthernet0/0/1 exception, Rx power is too low. Aug 11 2021 11:05:21+08:00 HUAWEI %%01SRM/3/RXPOWER_EXCEEDMINOR(l)[16]:Optical module in interface XGigabitEthernet0/0/1 exception, Rx power is too low. Aug 11 2021 10:55:20+08:00 HUAWEI %%01SRM/3/RXPOWER_EXCEEDMINOR(l)[22]:Optical module in interface XGigabitEthernet0/0/1 exception, Rx power is too low. ##發現日誌中提示 XGigabitEthernet0/0/1埠的接收功率太低；
[HUAWEI]display trapbuffer | include XGigabitEthernet0/0/1 Trapping buffer configuration and contents : enabled Allowed max buffer size : 1024 Actual buffer size : 256 Channel number : 3 , Channel name : trapbuffer Dropped messages : 0 Overwritten messages : 35970 Current messages : 256 #Aug 11 2021 11:35:22+08:00 HUAWEI ENTITYTRAP/3/OPTMAYINVALID:OID 1.3.6.1.4.1.2011.5.25.219.2.4.5 The optical power exceeds the upper warning threshold or falls below the lower warning threshold. (Index=67469390, EntityPhysicalIndex=67469390, PhysicalName="XGigabitEthernet0/0/1", EntityTrapFaultID=136223, EntityTrapReasonDescr="The receive power is below the lower warning threshold.") #Aug 11 2021 11:35:22+08:00 HUAWEI SRM/3/OPTPWRABNORMAL:OID 1.3.6.1.4.1.2011.5.25.129.2.17.1 Optical module power is abnormal. (EntityPhysicalIndex=67469390, BaseTrapSeverity=5, BaseTrapProbableCause=67697, BaseTrapEventType=9, EntPhysicalContainedIn=0, EntPhysicalName="XGigabitEthernet0/0/1", RelativeResource="Interface XGigabitEthernet0/0/1 optical module Rx Power", ReasonDescription="Rx power is too low. The detail information is as follows: The current Rx power is -18.66dBM; Set lower threshold is -18.38dBM; Default lower threshold is -18.38dBM") #Aug 11 2021 11:25:22+08:00 HUAWEI ENTITYTRAP/3/OPTMAYINVALID:OID 1.3.6.1.4.1.2011.5.25.219.2.4.5 The optical power exceeds the upper warning threshold or falls below the lower warning threshold. (Index=67469390, EntityPhysicalIndex=67469390, PhysicalName="XGigabitEthernet0/0/1", EntityTrapFaultID=136223, EntityTrapReasonDescr="The receive power is below the lower warning threshold.") ## 發現日誌中提示XGigabitEthernet0/0/1接收功率低於較低的警告閾值；
三、再檢視下這個埠的埠速率是否正常
[HUAWEI]display interface XGigabitEthernet0/0/1 | include Speed
Speed : 10000, Loopback: NONE
因為該埠為萬兆光口，所以速率10000正常
四、此時，基本可以判斷是光模組有問題了，檢視光衰
HUAWEI]display transceiver interface XGigabitEthernet0/0/1 verbose XGigabitEthernet0/0/1 transceiver information: ------------------------------------------------------------- Common information: Transceiver Type :10GBASE_LR_SFP Connector Type :LC Wavelength(nm) :1310 Transfer Distance(m) :10000(9um) Digital Diagnostic Monitoring :YES Vendor Name :HUAWEI Vendor Part Number :02318170 Ordering Name : ------------------------------------------------------------- Manufacture information: Manu. Serial Number :CD50HP10P Manufacturing Date :2015-11-01 Vendor Name :HUAWEI ------------------------------------------------------------- Diagnostic information: Temperature(?? :43.83 光模組當前溫度 Temp High Threshold(?? :100.00 光模組溫度上限 Temp Low Threshold(?? :-50.00 光模組溫度下限 Voltage(V) :3.26 光模組當前電壓 Volt High Threshold(V) :4.00 光模組電壓上限 Volt Low Threshold(V) :3.00 光模組電壓下限 Bias Current(mA) :33.51 光模組當前電流 Bias High Threshold(mA) :100.00 光模組電流上限 Bias Low Threshold(mA) :10.00 光模組電流下限 RX Power(dBM) :-18.66 光模組當前接收功率 RX Power High Warning(dBM) :0.49 光模組接收功率警告值上限 RX Power Low Warning(dBM) :-14.40 光模組接收功率警告值下限 RX Power High Threshold(dBM) :1.49 光模組接收功率上限 RX Power Low Threshold(dBM) :-18.38 光模組接收功率下限 TX Power(dBM) :-2.71 光模組當前傳送功率 TX Power High Warning(dBM) :0.49 光模組傳送功率警告值上限 TX Power Low Warning(dBM) :-8.19 光模組傳送功率警告值下限 TX Power High Threshold(dBM) :1.49 光模組傳送功率上限 TX Power Low Threshold(dBM) :-10.19 光模組傳送功率下限 Transceiver phony alarm : Yes ------------------------------------------------------------- 從上面的資訊可以看出，其他資訊都正常；只有RX Power(dBM):-18.66這個值超出了光模組接收功率的上下限(1.49-'-18.38');所以綜上所述，該光模組有問題需要更換了；
五、光模組資訊描述
專案 描述 Transceiver Type 光模組型別。 Connector Type 介面型別。 Wavelength(nm) 光波波長。 Transfer Distance(m) 光波傳輸距離。50um或62.5um表示光纖直徑，光纖為多模光纖。當光纖直徑為9um時表示單模光纖。 Digital Diagnostic Monitoring 光模組診斷資訊是否監控。 Vendor Name 光模組製造廠商名稱。 Vendor Part Number 廠家部件編碼。 Ordering Name 光模組對外型號。 Manu. Serial Number 光模組生產序列號。 Manufacturing Date 光模組生產日期。 Temperature(°C) 光模組當前溫度。 Temp High Threshold(°C) 光模組溫度上限。 Temp Low ThresholdC* C) 光模組溫度下限。 Voltage(V) 光模組當前電壓。 Bias Current(mA) 光模組當前電流。 Bias High Threshold(mA) 光模組電流上限。 Bias Low Threshold(mA) 光模組電流下限。 RX Power(dBM) 光模組接收功率。當接收功率為0瓦時，顯示為-Inf。 RX Power High Threshold(dBM) 光模組接收功率上限。 RX Power low Threshold(dBM) 光模組接收功率下限。 IX Power(dBM) 光模組傳送功率。當傳送功率為0瓦時，顯示為-Inf。 TX Power High Threshold(dBM) 光模組傳送功窣上限。 TX Power Low Threshold(dBM) 光模組傳送功率下限。