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deepmind.google·6d ago
AI Engineering
Hacker News·Jun 16·5 min read
10Gb/s Ethernet: switching to a Broadcom SFP+ module
TL;DR
A problem arose with overheating 10GBASE-T SFP+ modules in a home network setup, causing intermittent Internet access. To address this, the author switched to a more power-efficient SFP+ module.
✦ Why It Matters
Engineers should consider thermal management when selecting SFP+ modules for high-speed networks to ensure reliability.
Key Takeaways
- Monitor temperatures of SFP+ modules in high-speed networks.
- Consider using heatsinks for thermal management.
- Evaluate power-efficient alternatives for better performance.
- Implement environmental controls like air conditioning judiciously.
Full Summary
Upgrading to a 10Gb/s Ethernet home network using CAT-6 cabling required 10GBASE-T SFP+ modules, which are known to generate excessive heat. The author observed that one module reached a concerning temperature of 93C, leading to a shutdown cycle where the module would repeatedly overheat and reset.
To mitigate this, mini-heatsinks were added, but they were insufficient as temperatures continued to rise, especially during warmer weather. The author resorted to using air conditioning to maintain functionality, which felt impractical.
Ultimately, a switch to a more power-efficient SFP+ module was implemented, resulting in improved thermal management and stable network performance. This experience highlights the importance of selecting appropriate hardware for thermal efficiency in high-speed networking environments.