方式一：通过命令行查看光模块的序列号

• 通过display elabel命令，查看光模块的电子标签，其中BarCode信息即光模块的序列号。

  <HUAWEI> display elabel
  ......
  [Port_XGigabitEthernet4/0/1]
  /$[ArchivesInfo Version]
  /$ArchivesInfoVersion=3.0[Board Properties]
  BoardType=PLRXPLSCS4322N
  BarCode=CB02UF1SW
  Item=
  Description=10300Mb/sec-850nm-LC-33(OM1),82(OM2),300(OM3),400(OM4)
  Manufactured=2011-01-09
  /$VendorName=JDSU
  IssueNumber=
  CLEICode=
  BOM=
  ......

• 通过display transceiver interface interface-type interface-number命令，查看光模块信息，其中Manu. Serial Number信息即光模块的序列号。

  <HUAWEI> display transceiver interface gigabitethernet 9/0/21GigabitEthernet9/0/21 transceiver information:
  -------------------------------------------------------------
  Common information:                                                             Transceiver Type               :1000_BASE_SX_SFP                              Connector Type                 :LC                                            Wavelength(nm)                 :850                                           Transfer Distance(m)           :0(9um),300(50um),150(62.5um)                  Digital Diagnostic Monitoring  :YES                                           Vendor Name                    :Huawei                              Vendor Part Number             :02318169 Ordering Name                  :                                              
  -------------------------------------------------------------                   
  Manufacture information:                                                        Manu. Serial Number        :CD25HP12M:CD25HP12M                                  Manufacturing Date             :2013-06-184                                    Vendor Name                    :Huawei 
  -------------------------------------------------------------
  Alarm information:RX loss of signalRX power low
  -------------------------------------------------------------

方式二：在现场查看光模块的序列号

光模块表面贴纸上标有序列号。