kohlschuetter

6 ms·

1.
by kohlschuetter 4mo ago
You can also use a BananaPi BPI-R3 for reprogramming. And you can “upgrade“ 10 Gbit/s DACs to 25 Gb/s. Details here https://kohlschuetter.github.io/blog/posts/2026/03/22/unlock...
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xcesp: Developing for ESP32 Devices with Xcode(kohlschuetter.github.io)
3 points by kohlschuetter 4mo ago|0 comments
3.
by kohlschuetter 4mo ago
Many 10GbE DACs can be hacked to run 25GbE, which is something I had to figure out after realizing that it’s not just plug and play as it was with twisted pair cables coming from 1Gb to 2.5Gb… https://kohlschuetter.github.io&#x2F
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The Serial TTL connector we deserve(kohlschuetter.github.io)
106 points by kohlschuetter 5mo ago|79 comments
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by kohlschuetter 7mo ago
Thank you! I had to stop digging at some point, but honestly I can't wait for someone to port Doom to a ONU.
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by kohlschuetter 7mo ago
Thank you! I hope you all have trusted vendors, and no-one gets bent over by the sudden flood of cheap SFP28 cables :-)
7.
by kohlschuetter 7mo ago
I was going from SFP+ to SFP28. Not sure about SFP to SFP28. But with that EEPROM change you could also try going from SFP to SFP+, just use different bandwidth values. You could also try resoldering new/thicker Twinax wires to old SFP
8.
by kohlschuetter 7mo ago
Thanks! AUI: So that's what that port next to the BNC connector on the 3COM 3C509B was for! We've come a long way.
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Unlocking 25 Gigabit/S on 10 GbE Direct Attach Copper(kohlschuetter.github.io)
52 points by kohlschuetter 7mo ago|12 comments
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by kohlschuetter 8mo ago
Very timely post! How does this compare to https://github.com/tianocore/edk2-libc and https://libc.llvm.org/uefi/index.html , for example?
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DIY Games Console (2018)(mitxela.com)
2 points by kohlschuetter 8mo ago|0 comments
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by kohlschuetter 8mo ago
The new low-power Realtek chipsets will definitely push 10 GbE forward because the chipset won't be much more expensive to integrate and run than the 2.5Gbps packages. It all comes down to performance per Watt, the availability of chea
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by kohlschuetter 8mo ago
For reference, I'm seeing pings from my Mac to my Linux boxes (Lenovo Tiny5) at well under 1ms, not much worse than between them directly. But yeah, your mileage may vary.
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by kohlschuetter 8mo ago
I got me one of these adapters (RTL8127AF TXA403, with SFP+ cage); I haven't properly benchmarked it yet. There's no driver support on macOS, and for Linux you'd need a bleeding edge kernel. Just trying to physically connect
15.
by kohlschuetter 8mo ago
Be sure to test this adapter on iPad Pro, just for kicks (yes it works!) Although I managed to panic the kernel a couple of times without the extra heatsinks on...
16.
by kohlschuetter 8mo ago
This 100GbE card is an OCP 2.0 type 2 adapter, which will _probably_ not work with the PX PCB since that NIC has two of these mezzanine connectors, and PX only one. What also may not work are Dell rNDC cards. They look like they have OCP 2.
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by kohlschuetter 8mo ago
Very nice tip, thank you! I measure around +11W idle. While running a speed test, I read ca. +15W.
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by kohlschuetter 8mo ago
Thank you! I think, tragically, the blog post has caused this price increase. The offers on Amazon are most likely all drop shippers trying to gauge a price that works for them. You might have better luck ordering directly from China for a
19.
by kohlschuetter 8mo ago
Disconnected as in "network"? What PCIe card do you use? Can you update the firmware (maybe from Windows)? Also check the BIOS settings (try setting TB security to "No Security" or "User Authorization") Some OE
20.
by kohlschuetter 8mo ago
Thanks! Have you tried the boltctl/rescan setup I mentioned in the post? It should get you going, as long as your Thunderbolt/USB4 setup is correct. If you're using an adapter card to add Thunderbolt functionality, then your
21.
by kohlschuetter 8mo ago
My optical transceiver gets to around 52 °C (measured via IR camera), well below its design limit, so that's not bad. If truly concerned, one could use SFP28 to SFP28 cage adapters to have the heat outside the case, and slap on some ex
22.
by kohlschuetter 8mo ago
It also works on iPad Pro :)
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by kohlschuetter 8mo ago
The limitation is Thunderbolt (32 Gbps theoretical limit for PCIe 3 tunneling).
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by kohlschuetter 8mo ago
My goal was to get a fanless setup (for a quiet office). If that's not a requirement just get the Raiden Digit Light One, which does have a fan (and otherwise the same network card). If I could design an adapter PCB myself, I would go
25.
by kohlschuetter 8mo ago
Yes! However, I got around 15 Gbps with a Thunderbolt-only setup (TB3/TB4) = only 75% of the Ethernet setup. You'd also mostly be limited to short cables (1-2m) and a ring topology.
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by kohlschuetter 8mo ago
Yeah, it's because the network card adapter's heatsink is sandwiched between two PCBs. Not great, not terrible, works for me. The placement is mostly determined by the design of the OCP 2.0 connector. OCP 3.0 has a connector at th
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by kohlschuetter 8mo ago
Remote Time Machine backups are snappier than ever before :)
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by kohlschuetter 8mo ago
I was hoping somebody would suggest that (and eventually try it out). With TB5, and deep pockets, you might probably also benchmark it against a setup with dedicated TB5 enclosures (e.g., Mercury Helios 5S). TB5 has PCIe 4.0 x4 instead of P
29.
by kohlschuetter 8mo ago
I don't know how to measure the direct power impact on a MacBook Pro (since it's got a battery), but the typical power consumption of these cards is 9 W, not much more than Aquantia 10 GBit cards. Also, if you remember where you s
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Reliable 25 Gigabit Ethernet via Thunderbolt(kohlschuetter.github.io)
275 points by kohlschuetter 8mo ago|130 comments

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