Optic failure.
Low transmit (Tx) power levels on 16G SWL optics.
Risk of component failure with recent shipments of certain 16G SWL SFP.
Products that may experience this issue:
- DELL EMC Hardware: Connectrix DS-6505B
- DELL EMC Hardware: Connectrix DS-6510B
- DELL EMC Hardware: Connectrix DS-6520B
- DELL EMC Hardware: Connectrix DS-6610B
- DELL EMC Hardware: Connectrix DS-6620B
- DELL EMC Hardware: Connectrix DS-6630B
- DELL EMC Hardware: Connectrix MP-7840B
- DELL EMC Hardware: Connectrix ED-8510-4B
- DELL EMC Hardware: Connectrix ED-8510-8B
- DELL EMC Hardware: Connectrix ED-DCX6-4B
- DELL EMC Hardware: Connectrix ED-DCX6-8B
- Brocade Labelled 16GB SHORT WAVE SFP
Brocade part numbers:
- XBR-000192, SFP+, SWL 16G, 1-PK, A subset of optics built with serial numbers HAF618xxxx
- XBR-000193, SFP+, SWL 16G, 8-PK, A subset of optics built with serial numbers HAF618xxxx
Issue:
Broadcom has seen instances where optic laser failures or low transmit (Tx) power levels when building up, installing and starting up new network equipment. In some cases, the components are showing a steep slope in degradation.
16G SWL optics experiencing transmit level (Tx) issues may cause CRC, ITW, Bit errors to be logged at the device port attached to the optic in question.
For severe signal degradation on the Tx port, attached devices may experience log in or connectivity issues. In some cases, the Tx output may degrade to result in a laser fault.
Analysis of RMAd units has determined that the root cause of these failures is isolated to a set of silicon wafers involved in recent process changes.
Because these are early life failures that often show a steep rate of decline, it is difficult to develop and have confidence in a failure model that would accurately define the die failure rate of any individual wafer.
Brocade TSB 2019-276-A
Fix: Automated monitoring for optics was added in Fabric OS 8.1.2f and 8.2.1 and later.
Note: Requests for this TSB event are NO longer being accepted. (Expired 1st July 2020). Any Optic claim requests are subject to normal customer support and warranty terms.
Brocade TSB 2019-276-A