PSA: 172.24.24.0/24 fails for Internet connectivity

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Martin Silbernagl asked Dec 10, '23

PSA: 172.24.24.0/24 fails for Internet connectivity

I discovered the hard way (days of debugging, including serial console) that the build-in WiFi access point of the Cerbo GX uses the private IP network 172.24.24.0/24. So, even when WiFi is turned off, using a LAN (be it Ethernet or WiFi based) will obtain the correct IP address via DHCP, but fail to route any traffic.

This will manifest itself in with an #153 Connection error in the VRM online portal screen:

<urllib3.connection.VerifiedHTTPSConnection object at 0xb5a04688> Failed to establish a new connection: [Errno -3] Temporary failure in name resolution

Could someone from Victron please add this to the Cerbo GX documentation?

TCP IP Networking

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Answer 1 · 2023-12-10T19:22:54Z

Matthias Lange - DE answered · Dec 10, 2023 at 07:22 PM

I don't have much knowledge in network stuff, but there is something mentioned in the manual:

If you cannot use VictronConnect, you can use a web browser and navigate to the IP address http://172.24.24.1 or http://venus.local

https://www.victronenergy.com/media/pg/Cerbo_GX/en/accessing-the-gx-device.html#UUID-12ee0e7e-a2db-4c34-1ab3-db19636edc37

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Martin Silbernagl commented · Dec 10, 2023 at 07:30 PM

Yes, that is an implicit hint, but I was thinking more along the lines of adding an explicit one to section 12.4 Troubleshooting data logging of the Cerbo GX manual. It already contains a section relating to Error #153 Connection error.

Also Section 6 Internet Connectivity might be improved with this information.

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