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TOPIC: Ethernet internet connectivity

Ethernet internet connectivity 24 Mar 2021 05:42 #1

  • VK2BJ
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I have recently bought a SunSDR2 DX which I have got working as per manual and manual addendum.
The ethernet connection to the PC works fine and I am using CAT with my Turbolog logging program.
However, I used to use my ethernet connection from my router for internet access. I have tried connecting the SunSDR2 DX, PC and ethernet cable from the router via a switch but the internet connection no longer works so I have to use WiFi instead.
Is there a way to restore my ethernet cable internet connection or is it simply that the PC will now only work with the SunSDR2 DX ?
Any information would be appreciated.
Barry Simpson VK2BJ
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Ethernet internet connectivity 24 Mar 2021 08:34 #2

  • g0cgl
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  • Erik EI4KF / G0CGL
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If you ask 6 people that question you will probably get 6 different answers. Network configurations vary so much. Here is my attempt:

When the radio was connected to the computer, most likely DHCP was used. Now, with the change, it has to be on the subnet of your network. So did you set all network components to fixed ip addresses (computer and switch if can be) and did you do the following for the radio?

1- Connect the computer directly (not through the router) to the radio through an ethernet cable.

2- Configure the computer's network card to use an IP address of the same class as the radio, for example 192.168.16.15.

3- Restart the computer and, if the radio was on, you should turn it off and on again.

4- Start ESDR2 and, from the Options-Devices-> menu, search for the radio.

5- Once the radio has been found, click on the Use button and then move to the Expert panel.

6- In the New IP Address area set the new IP address (possibly also the port) and click on the Set IP Address button. For example you can give the address 192.168.0.12. (whatever your router subnet is so it might be 192.168.1.xx)

7- Close EESDR and turn off the radio.

8- Return to the computer's network settings and restore the default settings (those that allow the PC to connect to your internet).

9- Restart the computer.

10- In the meantime connect the radio to the router and turn it back on.

11- Check that the computer is on the network and that the LED of the Sun is green. At this point, by opening ESDR2 it will be possible to start using the radio and should be connectable from any PC on the network.

If there is still a failure check that you can ping all components.

But any networking guru may have corrections to the above - this is how I did it but, as I said, networks vary.
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Ethernet internet connectivity 26 Mar 2021 08:53 #3

  • iw7dmh
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In addition to what Erik already wrote, I would add a simple but effective router configuration.
I use to configure my home router reducing the DHCP address pool. For example in my intranet the pool of IP addresses for DHCP is in the range [192.168.0.31 - 192.168.0.230] instead of the default [192.168.0.2 - 192.168.10.255].

The addresses below 31 are used for the ham radio devices (in my case SunSDR, station computer, station controller with arduino and rotor). Addresses above 230 are reserved for other home devices such as wifi extenders, game consoles, NAS devices and smart TV set.
In this way I don't have to worry about the mac address ond other stories nor I am forced to configure the router each time I add a new devices. I just have to set a fixed address (out of the dhcp pool space) on the devices itself and I am done.
The ip conflict risk is almost zeroed.

I hope this will help
Best 73'
Enzo
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Ethernet internet connectivity 26 Mar 2021 18:03 #4

  • N8SDR
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Assigned static IP addresses were possible is always a plus. make it easy to diagnose issues what is / isnt connected,
DHCP devices that you have too static the rest!

Possibly VK2BJ had a limited IP range by his ISP perhaps 1 or 2 static IP addresses, and had his network card setup to reflect on those settings,

in that case you need something to handle DHCP or a routing table, in order to add more devices. like another router- but watch and do not double NAT your network you can cause more issues with tow NAT devices running on same network
73 Rick
Last Edit: 26 Mar 2021 18:07 by N8SDR.
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Ethernet internet connectivity 01 Apr 2021 03:39 #5

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Thank you very much Erik. It looks very complicated. I think I can probably do it but I know that when I have messed with router settings before, I have stuffed the entire network and had to start again !
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Ethernet internet connectivity 01 Apr 2021 07:14 #6

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So have many others, Barry. Just go stage by stage. Any insurmountable failure, don't hesitate to ask here or Roman direct.
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Ethernet internet connectivity 01 Apr 2021 09:42 #7

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Thanks for the encouragement Erik.
I have actually spent a lot of time today exploring the router, computer and Sunsdr2 DX settings.
I initially couldn't access my router at all because of the way I had it configured in bridge mode. All that is now overcome by some simple rearrangement in the way the cables are connected to the internet modem.
So as not to conflict with the internet modem, the router told me that it has set itself a series of addresses 172: 16: 0: xxx.although these are automatically allocated by DHCP.
I was able to follow the process to allocate a 172: etc address to the Sunsdr2 DX and I tried allocating a fixed address to the computer but it won't connect to the router unless I engage DHCP.

So what I will need to do over the weekend when I have the inclination is to go into the router and change from DHCP to fixed addresses for everything.

I have a lot of things connected to the router on the wireless network but I guess I could just try a small sample including the computer ethernet connection.

In theory that should enable the Sunsdr2 DX to connect via the network to the computer.

Assuming it does I will have to decide whether I want to give everything fixed addresses.

Now I am into it, it is quite good fun as long as I have the instructions to restore the original settings !!

Thanks again,

Barry Simpson VK2BJ
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