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

[Alok_Shukla]

For connecting multimode fiber there is some functionality available in cisco like UDLD and loopguard, what about on extreme switches?

[GONÇALO_NUNO_CO]

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

[GONÇALO_NUNO_CO]

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

[Lutha]

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

[Alok_Shukla]

Thanks