以93系列交换机为例，可以登录设备查看对应口上光模块的信息，具体方法如下：
<Quidway>dis transceiver interface XGigabitEthernet 10/0/0 verbose XGigabitEthernet10/0/0 transceiver information: ------------------------------------------------------------- Common information: Transceiver Type :10GBBASE_SR_SFP Connector Type :LC Wavelength(nm) :850 Transfer Distance(m) :33(OM1),82(OM2),300(OM3),400(OM4) Digital Diagnostic Monitoring :YES Vendor Name :HUAWEI Vendor Part Number :02318169 Ordering Name : ------------------------------------------------------------- Manufacture information: Manu. Serial Number :N3354000583 Manufacturing Date :2015-04-02 Vendor Name :HUAWEI ------------------------------------------------------------- Alarm information: ------------------------------------------------------------- Diagnostic information: Temperature(?? :27 Voltage(V) :3.31 Bias Current(mA) :4.89 Bias High Threshold(mA) :20.00 Bias Low Threshold(mA) :1.00 Current Rx Power(dBM) :-2.67 Default Rx Power High Threshold(dBM) :1.00 Default Rx Power Low Threshold(dBM) :-11.90 Current Tx Power(dBM) :-2.25 Default Tx Power High Threshold(dBM) :1.00 Default Tx Power Low Threshold(dBM) :-9.30 User Set Rx Power High Threshold(dBM) :1.00 User Set Rx Power Low Threshold(dBM) :-11.90 User Set Tx Power High Threshold(dBM) :1.00 User Set Tx Power Low Threshold(dBM) :-9.30 -------------------------------------------------------------
| 项目 | 描述意义 |
| Transceiver Type | 光模块类型 |
| Connector Type | 光模块接口类型 |
| Wavelength(nm) | 光波波长 |
| Transfer Distance(m) | 光模块传输距离 |
| Digital Diagnostic Monitoring | 光模块诊断信息是否被监控 |
| Vendor Name | 光模块制造厂商 |
| Vendor Part Number | 厂商模块编码 |
| Ordering Name | 光模块对外型号 |
| Manu. Serial Number | 光模块生产序列号 |
| Manufacturing Date | 光模块生产日期 |
| Temperature(°C) | 光模块当前温度 |
| Voltage(V) | 光模块当前电压 |
| Bias Current(mA) | 光模块当前电流 |
| Bias High Threshold(mA) | 光模块电流上限 |
| Bias Low Threshold(mA) | 光模块电流下限 |
| Current Rx Power(dBM) | 光模块接受功率，当功率为0瓦时，显示为-Inf |
| Default Rx Power High Threshold(dBM) | 光模块接受功率上限 |
| Default Rx Power Low Threshold(dBM) | 光模块接受功率下限 |
| Current Tx Power(dBM) | 光模块发送功率，当功率为0瓦时，显示为-Inf |
| Default Tx Power High Threshold(dBM) | 光模块发送功率上限 |
| Default Tx Power Low Threshold(dBM) | 光模块发送功率下限 |
| User Set Rx Power High Threshold(dBM) | 设定光模块接受功率上限 |
| User Set Rx Power Low Threshold(dBM) | 设定块接受接受功率下限 |
| User Set Tx Power High Threshold(dBM) | 设定光模块发送功率上限 |
| User Set Tx Power Low Threshold(dBM) | 设定光模块发送功率下限 |
Transfer Distance(m)说明：多模光纤的纤芯直径为50~62.5μm，包层外直径125μm，单模光纤的纤芯直径为8.3μm，包层外直径125μm。光纤的工作波长有短波长0.85μm、长波长1.31μm和1.55μm。光纤损耗一般是随波长加长而减小，0.85μm的损耗为2.5dB/km,1.31μm的损耗为0.35dB/km，1.55μm的损耗为0.20dB/km，这是光纤的最低损耗，波长1.65μm以上的损耗趋向加大。由于OHˉ的吸收作用，0.90~1.30μm和1.34~1.52μm范围内都有损耗高峰，这两个范围未能充分利用。
自己设定光模块接受发送功率方法如下例所示：
# 设置接口GE1/0/1的光模块接收告警下限值为-10dBM，发送告警上限值为-0.9dBM。
<Quidway> system-view
[Quidway] interface gigabitethernet 1/0/1
[Quidway-GigabitEthernet1/0/1] set transceiver receive-power lower-threshold -10
[Quidway-GigabitEthernet1/0/1] set transceiver transmit-power upper-threshold -0.9