Wired Intelligent Edge

Hi Team,

I am trying to connect my Aruba 2930F-24G-PoEP-4SFPP switch with my Aruba JL479A 8320 switch with an Aruba 1 GB transceiver model number J4859D.

I am not getting port up on both sides.

I have checked the power levels on both the switch end and getting errors on RX.
This is on aruba 2930F side.

Transceiver in 25
Interface Index : 25
Type : 1000LX
Model : J4859D
Connector Type : LC
Wavelength : 1310nm
Transfer Distance : 10.0km (9um),
Diagnostic Support : DOM
Serial Number : CN10KC6BX6

Status
Temperature : 37.437C
Voltage : 3.3136V
Tx Bias : 9.472mA
Tx Power : 0.2888mW, -5.394dBm
Rx Power : 0.0000mW, -infdBm

Recent Alarms :

Rx power low alarm
Rx power low warning

This is on aruba JL479A 8320 side.

Transceiver in 1/1/17
Interface Name : 1/1/17
Type : SFP-LX
Connector Type : LC
Transceiver Status : An HPE pluggable module that is supported in this interface
Wavelength : 1310nm
Transfer Distance : 10km (SMF), 0m (OM1), 0m (OM2), 0m (OM3)
Diagnostic Support : DOM
Product Number : J4859D
Serial Number : CN10KC6CYW
Part Number : 1990-4414

Status
Temperature : 28.0000C
Voltage : 3.4000V
Tx Bias : 8.5440mA
Rx Power : 0.0000mW, -inf
Tx Power : 0.2884mW, -5.40dBm

Recent Alarms:
Rx Power low alarm

Thanks
Sanjib Behera

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Sanjib Behera
Highradius
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Hi Sanjib,

There must be an issue with the fiber cable. Both switches report no RX signal. There are two things you can check on your side:

1. The cable connecting both switches must be SMF, not MM.
2. LC connectors consist of two separate fibers, be sure they are crossed, e.g. one fiber should connect RX side on Switch A to TX side of Switch B. Another fiber should connect TX side of Switch A to RX side of Switch B.

If that is checked, then the issue can be in the cable itself.

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Ivan Bondar
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