For connecting multimode fiber how do we check Rx or Tx are properly working without breaking?

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  • Updated 10 months ago
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For connecting multimode fiber there is some functionality  available in cisco like UDLD and loopguard, what about on extreme switches?
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Alok Shukla

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Posted 10 months ago

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Lutha

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HI Alok 

you can use the below commands to see if there is RX or TX errors 

sh port rxerrors port-number
sh port txerrors port-number

for a specific port use like this 
sh port 1:2 txerrors
sh port 1:2 rxerrors

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Alok Shukla

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Thanks
Hi Alok, Im no sure of this is the same as UDLD, but extreme has ELRP.

https://gtacknowledge.extremenetworks.com/articles/Q_A/What-is-ELRP

Regards
Hi Alok,

You can also check the transceiver details.

Slot-1 SFISIA050100.2 # sh port 1:49 transceiver information detail
Port :  1:49
    Media Type            : SX (Industrial Temperature)
    Vendor Name           : WTD
    Part Number           : RTXM191-552
    Serial Number         : EB161300090541
    Wavelength            : 850 nm
    Temp (Celsius)            :  32.91      Status               :  Normal
          Low Warn Threshold  : -40.00      High Warn Threshold  :  90.00
          Low Alarm Threshold : -45.00      High Alarm Threshold :  100.00
    Voltage AUX-1/Vcc (Volts) :  3.30       Status               :  Normal
          Low Warn Threshold  :  3.10       High Warn Threshold  :  3.50
          Low Alarm Threshold :  3.00       High Alarm Threshold :  3.60

    Tx Power (dBm)            : -6.19       Status               :  Normal
          Low Warn Threshold  : -7.17       High Warn Threshold  : -5.17
          Low Alarm Threshold : -8.17       High Alarm Threshold : -4.17
    Rx Power (dBm)            : -6.42       Status               :  Normal
          Low Warn Threshold  : -15.00      High Warn Threshold  : -3.00
          Low Alarm Threshold : -18.01      High Alarm Threshold :  0.00
    Tx Bias Current (mA):        3.83       Status               :  Normal
          Low Warn Threshold  :  0.90       High Warn Threshold  :  37.20
          Low Alarm Threshold :  0.72       High Alarm Threshold :  47.20

Regards