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Question

Troubleshooting fiber connection problems


Hi...
i have problem with extreme switch how to troubleshoot if fiber optic is not working

5 replies

Userlevel 1
Hi,
is it an EXOS or EOS (Enterasys) switch?
ar wrote:

Hi,
is it an EXOS or EOS (Enterasys) switch?

exos
exos
Userlevel 5
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
Userlevel 6
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

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