Network Architecture & Design

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Troubleshooting fiber connection problems

  • 1.  Troubleshooting fiber connection problems

    Posted 11-06-2017 05:23
    Hi...
    i have problem with extreme switch how to troubleshoot if fiber optic is not working


  • 2.  RE: Troubleshooting fiber connection problems

    Posted 11-06-2017 05:27
    Hi,
    is it an EXOS or EOS (Enterasys) switch?



  • 3.  RE: Troubleshooting fiber connection problems

    Posted 11-06-2017 07:00
    exos


  • 4.  RE: Troubleshooting fiber connection problems

    Posted 11-06-2017 07:12
    Hello George,
    Are you looking for UDLD (Unidirectional Link Fault Management)? UDLD can help to detect unidirectional links due to one-way traffic on fiber-optic or misconnected ports on fiber-optic links.

    http://documentation.extremenetworks.com/exos_22.3/exos_21_1/oam/c_unidirectional-link-fault-managem...

    Best regards,
    Bin


  • 5.  RE: Troubleshooting fiber connection problems

    Posted 11-06-2017 18:57
    You could also look at light levels on both sides on the link you are trying to get up if you are using a current switch with optics that support this... You need to also look at duplex settings if it is a sfp+ port.

    Command is
    show port # transceiver info detail

    example

    PLW_X430_WWaterTP_Homestead.1 # sh02 port 25 transceiver info detail

    Port : 25

    Media Type : ZX_1550 (Industrial Temperature)
    Vendor Name : SOURCEPHOTONICS
    Part Number : SPGBZXIDFBEX
    Serial Number : F2R2017123
    Wavelength : 1550 nm

    Temp (Celsius) : 42.53 Status : Normal
    Low Warn Threshold : -40.00 High Warn Threshold : 100.00
    Low Alarm Threshold : -45.00 High Alarm Threshold : 105.00

    Voltage AUX-1/Vcc (Volts) : 3.27 Status : Normal
    Low Warn Threshold : 3.00 High Warn Threshold : 3.60
    Low Alarm Threshold : 2.90 High Alarm Threshold : 3.70

    Tx Power (dBm) : 2.23 Status : Normal
    Low Warn Threshold : 0.00 High Warn Threshold : 5.00
    Low Alarm Threshold : -1.00 High Alarm Threshold : 6.00

    Rx Power (dBm) : -8.36 Status : Normal
    Low Warn Threshold : -23.01 High Warn Threshold : -3.00
    Low Alarm Threshold : -23.98 High Alarm Threshold : -2.00

    Tx Bias Current (mA): 10.53 Status : Normal
    Low Warn Threshold : 0.20 High Warn Threshold : 60.00
    Low Alarm Threshold : 0.10 High Alarm Threshold : 70.00