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Re: Configure network of an embedded device

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On 9/7/2023 2:14 PM, Dimiter_Popoff wrote:
> On 9/7/2023 23:30, Don Y wrote:
>> How do you address the case of your (GUI) client discovering some other
>> DHCP service running on the network?
> 
> This is another point added to my approach "sell them a router you have
> set up". In fact I had exactly this at some point, a customer for our

That just brings up a different set of problems.
You have to pick a range of IPs for the router's clients.
How do you know that your choices won't conflict with other
hosts in their organization?

> TLD readers decided to stray from the router we had delivered with the
> units they had purchased. The people who had to do the measurements
> (sometimes 1000+ a day) had no access to the corporate router so someone
> there had set some fixed IP addresses for our devices on their
> network, not behind the router we supplied. Things worked - until they
> did not.
> They started to call "your device won't boot at times".
> "Does the LED always indicate the unit did get an IP address?"
> "Yes it does."
> Well does it always boot behind the router we supplied?
> "Hmm let us test... Yes it does"

There is ALWAYS an advantage to be had from having a known,
working configuration that you can coax the user back to
trying.

But, getting from there to something that fits *his* needs
can be problematic (as above).

> [Most likely this was yet another sabotage against our devices at
> this customer (they have no legit second dhcp server there so someone
> must have set one up, the problems started some time after they changed
> routers and well, they have a history of sabotage attempts there, there
> was physical evidence for that).]
> 
> If a design can afford a cheap router just include one and save yourself
> all the headache (that to the OP). Other than that, you are stuck to
> my other solution, which works - just technically, I saw no evidence
> anyone used it ever. People either can do what it takes with their
> router/network or they use the router we supply.

I think the best approach for bootstrapping headless devices,
*today* would be to embed BLE (severely range constrained) or,
preferably, NFC in the device and kludge an interface that can
rely on something (app) present in all/most cell phones to bridge
the gap to a "familiar" UI.

But, this will still only address the one-off sites.  Handling
hundreds or thousands of devices (as is my bootstrap case) will
always be a challenge -- esp if no techies around to deal with it!

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Configure network of an embedded device pozz <pozzugno@gmail.com> - 2023-09-05 10:37 +0200
  Re: Configure network of an embedded device Dimiter_Popoff <dp@tgi-sci.com> - 2023-09-05 13:43 +0300
    Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 11:03 -0700
  Re: Configure network of an embedded device Theo <theom+news@chiark.greenend.org.uk> - 2023-09-06 21:56 +0100
    Re: Configure network of an embedded device pozz <pozzugno@gmail.com> - 2023-09-07 09:54 +0200
      Re: Configure network of an embedded device Theo <theom+news@chiark.greenend.org.uk> - 2023-09-07 19:40 +0100
        Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 13:19 -0700
        Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 13:30 -0700
          Re: Configure network of an embedded device Dimiter_Popoff <dp@tgi-sci.com> - 2023-09-08 00:14 +0300
            Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 14:31 -0700
              Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 14:34 -0700
              Re: Configure network of an embedded device Dimiter_Popoff <dp@tgi-sci.com> - 2023-09-08 00:53 +0300
                Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 15:21 -0700
                Re: Configure network of an embedded device Dimiter_Popoff <dp@tgi-sci.com> - 2023-09-08 02:05 +0300
                Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 16:55 -0700
                Re: Configure network of an embedded device Dimiter_Popoff <dp@tgi-sci.com> - 2023-09-08 04:26 +0300
                Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 18:57 -0700
          Re: Configure network of an embedded device Theo <theom+news@chiark.greenend.org.uk> - 2023-09-08 10:17 +0100
            Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-08 03:20 -0700
  Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-07 10:57 -0700
    Re: Configure network of an embedded device pozz <pozzugno@gmail.com> - 2023-09-08 09:41 +0200
      Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-08 03:50 -0700
        Re: Configure network of an embedded device pozz <pozzugno@gmail.com> - 2023-09-08 13:56 +0200
          Re: Configure network of an embedded device Don Y <blockedofcourse@foo.invalid> - 2023-09-08 09:45 -0700
            Re: Configure network of an embedded device George Neuner <gneuner2@comcast.net> - 2023-09-08 16:50 -0400

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