端口光功率低,正常是0至-16.99范围内,现在-20.09。-20.09值一直固定没有发生变化。
端口只配置了一个access,没有其他配置。
之前端口是正常的,较近才收光低。
这种现象是光纤问题还是模块问题,怎么排障?
端口目前除了收光率低,没有对其他影响,不丢包。
光模块信息:
dis transceiver interface GigabitEthernet 1/0/33 verbose
GigabitEthernet1/0/33 transceiver information:
-------------------------------------------------------------
Common information:
Transceiver Type :1000_BASE_SX_SFP
Connector Type
C
Wavelength(nm) :850
Transfer Distance(m) :275(OM1),550(OM2),1000(OM3)
Digital Diagnostic Monitoring :YES
Vendor Name :FINISAR CORP.
Vendor Part Number :FTLF8519P2BNL-HW
Ordering Name :
-------------------------------------------------------------
Manufacture information:
Manu. Serial Number :PHK5F62
Manufacturing Date :2010-05-08
Vendor Name :FINISAR CORP.
-------------------------------------------------------------
Alarm information:
RX power low
-------------------------------------------------------------
Diagnostic information:
Temperature(°C) :42
Voltage(V) :3.35
Bias Current(mA) :6.89
Bias High Threshold(mA) :33.50
Bias Low Threshold(mA) :1.69
Current Rx Power(dBM) :-20.09
Default Rx Power High Threshold(dBM) :0.00
Default Rx Power Low Threshold(dBM) :-16.99
Current Tx Power(dBM) :-4.67
Default Tx Power High Threshold(dBM) :0.00
Default Tx Power Low Threshold(dBM) :-12.50
User Set Rx Power High Threshold(dBM) :0.00
User Set Rx Power Low Threshold(dBM) :-16.99
User Set Tx Power High Threshold(dBM) :0.00
User Set Tx Power Low Threshold(dBM) :-12.50
-------------------------------------------------------------
端口配置:
dis current-configuration int GigabitEthernet 1/0/33
#
interface GigabitEthernet1/0/33
description TO_[ZhiCheng_SUN_M9000]
port link-type access
port default vlan 110
#
return
解决方法:
从回显来看是Current Rx Power(dBM) :-20.09 ,收光功率低:
1、先看下对端端口的发光功率,如果发光功率低的话,更换下光模块,如果还是行,可能就是端口的问题,再换个口试试;
2、如果对端端口的发光功率没有问题,就检查下光纤,看下是不是哪里被折了