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、查看交換機端口狀態
[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% 6148394 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: 6148874 Total Error: 0 [HUAWEI]display interface XGigabitEthernet0/0/1 | include Error Total Error: 6148875 Total 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左右再執行一次端口狀態命令，查看下inErrors的數量是否上漲，如果上漲了表示目前是有問題的；
二、查看交換機日志並過濾該端口的信息
[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. ##發現日志中提示 XGigabitEthernet0/0/1端口的接收功率太低；
[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.") ## 發現日志中提示XGigabitEthernet0/0/1接收功率低於較低的警告閾值；
三、再查看下這個端口的端口速率是否正常
[HUAWEI]display interface XGigabitEthernet0/0/1 | include Speed
Speed : 10000, Loopback: NONE
因為該端口為萬兆光口，所以速率10000正常
四、此時，基本可以判斷是光模塊有問題了，查看光衰
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 光模塊當前溫度 Temp High Threshold(?? :100.00 光模塊溫度上限 Temp Low Threshold(?? :-50.00 光模塊溫度下限 Voltage(V) :3.26 光模塊當前電壓 Volt High Threshold(V) :4.00 光模塊電壓上限 Volt Low Threshold(V) :3.00 光模塊電壓下限 Bias Current(mA) :33.51 光模塊當前電流 Bias High Threshold(mA) :100.00 光模塊電流上限 Bias Low Threshold(mA) :10.00 光模塊電流下限 RX Power(dBM) :-18.66 光模塊當前接收功率 RX Power High Warning(dBM) :0.49 光模塊接收功率警告值上限 RX Power Low Warning(dBM) :-14.40 光模塊接收功率警告值下限 RX Power High Threshold(dBM) :1.49 光模塊接收功率上限 RX Power Low Threshold(dBM) :-18.38 光模塊接收功率下限 TX Power(dBM) :-2.71 光模塊當前發送功率 TX Power High Warning(dBM) :0.49 光模塊發送功率警告值上限 TX Power Low Warning(dBM) :-8.19 光模塊發送功率警告值下限 TX Power High Threshold(dBM) :1.49 光模塊發送功率上限 TX Power Low Threshold(dBM) :-10.19 光模塊發送功率下限 Transceiver phony alarm : Yes ------------------------------------------------------------- 從上面的信息可以看出，其他信息都正常；只有RX Power(dBM):-18.66這個值超出了光模塊接收功率的上下限(1.49-'-18.38');所以綜上所述，該光模塊有問題需要更換了；
五、光模塊信息描述
項目 描述 Transceiver Type 光模塊類型。 Connector Type 接口類型。 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 光模塊診斷信息是否監控。 Vendor Name 光模塊制造廠商名稱。 Vendor Part Number 廠家部件編碼。 Ordering Name 光模塊對外型號。 Manu. Serial Number 光模塊生產序列號。 Manufacturing Date 光模塊生產日期。 Temperature(°C) 光模塊當前溫度。 Temp High Threshold(°C) 光模塊溫度上限。 Temp Low ThresholdC* C) 光模塊溫度下限。 Voltage(V) 光模塊當前電壓。 Bias Current(mA) 光模塊當前電流。 Bias High Threshold(mA) 光模塊電流上限。 Bias Low Threshold(mA) 光模塊電流下限。 RX Power(dBM) 光模塊接收功率。當接收功率為0瓦時，顯示為-Inf。 RX Power High Threshold(dBM) 光模塊接收功率上限。 RX Power low Threshold(dBM) 光模塊接收功率下限。 IX Power(dBM) 光模塊發送功率。當發送功率為0瓦時，顯示為-Inf。 TX Power High Threshold(dBM) 光模塊發送功窣上限。 TX Power Low Threshold(dBM) 光模塊發送功率下限。