Unable to update the local IP address on Box3

Zellou

Hi everyone,

I just get my new Internet Box 3 and when I started configure it I was really surprised that I cannot change the local IP address of the box on the network 10.10.10.0/24, for example 10.10.10.1 with network mask 255.255.255.0.

I contacted the support, and they also failed configuring the local IP address to 10.10.10.1.

But we can configure it to 192.168.1.2 or 192.168.1.10.

The very interesting part is that it was my configuration on the previous box.

I need help to configure this interface, maybe I'm missing something.

Note that I cannot use the network 192.168.1.0/24.

Thank you in advance.

Best regards,

Biorn1950

Hello Zellou,

As you can see below, for me there is no issue to configure my IB3's local network on the range 10.10.10.0/24

Capture d'écran 2020-12-02 à 08.10.22.png

Did you have any error message when you tried?

What is your public ip in the overview page of the internet box? (ex. 178.194.x.x)

Zellou

Hi @Biorn1950,

First of all thank you for your answer.
When I try to configure it to 10.10.10.1 I raise this error message in a warning box:Your changes could not be saved

Swisscom support tried the same and get the same error message.My public IP is 188.61.x.x

Biorn1950

Hum, maybe you have a device in conflict with the ib3.

I recommand you:

unplug all devices, and just keep connected your computer to access to the ib3 website. (without static ip use dhcp)

- make a factory reset

- Try again to change your ib3 local ip (just change the field "Internet-Box IP address" and save)

Give your feedback when done.

lucaberta

Adding to what @Biorn1950 correctly says, remember that when you change the IP address and go to a completely different subnet (from 192.168.1.x to 10.10.10.x) the configuration of the DHCP server also changes on the router, and accordingly your computer's IP address will need to be reassigned by the router once the new configuration will have been activated.

It is quicker to do these changes over an ethernet cable connected to one of the yellow switch ports.

Unplug, wait a few seconds, then plug in again the ethernet cable, and see if your PC gets a new IP address in the 10.10.10.x subnet. If so, you will know that the configuration change went into effect.

Let us know how it goes! 👍🏻

Ciao, Luca

Zellou

Again, thanks for your answer @Biorn1950,

Yesterday, I disconnected everything but one laptop connected with ethernet cable.

I also disabled WiFi (to do not have any wireless devices), and the DHCP to have static config only.

Here was my mistake regarding your answer. You think the router prevent me changing his private IP because my laptop is statically on the "original" network?

I will try your solution to connect with DHCP lease in place of static...

If it works, please Swisscom remove such "protections". It's a non sense. And very confusing for administrators.

Zellou

Thanks for your answer @lucaberta,

No problem for me managing multiple networks. When I do some config / testing I configure my DHCP lease to 1 min.

Note that I cannot manage the DHCP lease time in the Box3...

Also I'm a Linux user, and I use netctl to configure my network interfaces, very useful in such activities 😉

lucaberta

Ah, good @Zellou, you too are a power user, then!

Yes, the darned DHCP server in the Internet-Box is really clamped down in the features...

The advantage of using an physical ethernet cable is the loss of carrier once the cable is disconnected, and that forces a new DHCP negotiation in most cases.

What you say about the IB preventing you from changing its IP address because you used a static IP address kind of makes sense. Because most people will be completely baffled by the sudden loss of connectivity, without realizing that they have created two separate networks without realizing it! 😄🤣

Sometimes you need to explain things also for the non-power users, you see... 😜

Hope you sorted everything out and that the IB3 is now on the correct subnet and IP address!

Ciao, Luca

Grischiewiok49

How did you get on with this? I'm have the same issue trying to change the subnet from 192.168.1.X to something else (like 192.168.2.X).

I get the same error message "Your changes could not be saved"

I have tried

Removing all static leases (thought the static leases on the old subnet may be causing an issue)
Disabling DMZ (my current DMZ is pointing to an old 192.168.1.X address)

I'm loathed to try full reset etc, but may have to go down that route 😩

lucaberta

Hi @Grischiewiok49,

quite some time has passed, and I have not touched the configuration of the box, and fear doing it, like you say!

Maybe something is broken in the firmware, and a full reset is necessary after all, with the caveat mentioned in this thread.

At any rate, I am still using the box as an Access Point and it works well, though I will probably remove it from service and put a cheap AP based on OpenWRT in the near future.

Bye, Luca