This topic was migrated from the BotBlox ticketing system after being summarised and anonymized.
Problem:
Customer was unable to pass network traffic through the GigaBlox SFP port when using several 1G copper and fiber SFP modules. Link appeared to come up, but traffic would not traverse the switch.
Summary:
Appears to be a copper SFP compatibility issue, but totally confirmed that all copper SFPs are unsupported.
Details:
- Multiple GigaBlox SFP units were tested with identical results, ruling out a faulty board.
- Direct Ethernet connections worked normally.
- Traffic passed normally when using the onboard copper PHY ports.
- Fiber SFP modules were reported and later verified to work correctly.
- Internal testing successfully reproduced the issue with a 10Gtek ASF-GE2-1 / ASF-GE2-T copper RJ45 SFP.
- Based on internal testing, the issue appeared specific to the tested copper SFP family rather than a general GigaBlox hardware fault.
What Worked:
- Fiber/optical SFP modules.
- Standard copper PHY ports on GigaBlox.
- Direct device-to-device Ethernet connections.
What Did Not Work:
- 10Gtek ASF-GE2-1 / ASF-GE2-T copper RJ45 SFP modules.
- Customer’s original copper SFP testing through the GigaBlox SFP port.
Conclusion:
The investigation concluded that the issue was most likely a copper SFP compatibility problem, with the ASF-GE2 family specifically identified as problematic. Additional testing with other 1 Gbps copper SFPs was requested, but the available records do not contain the final results needed to determine whether the limitation applied to all copper SFPs or only certain models.
(TS2509–0009)