SmartSDR 2.0 periodically shuts down

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  • Updated 1 year ago
Several times a day, SmartSDR 2.0 is shutting down.  I get the error message "SmartSDR for Windows has lost connection to the radio. Please reconnect."  I am running Windows 10, it is a COMPLETELY CLEAN, NEW INSTALL -- Version 1703.  Only last night, I had to delete the partitions on my hard drive and perform the installation.
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Andrew Thall

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Posted 1 year ago

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Bill -VA3WTB

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Just as it says,,it is losing connection with the radio. This is not a SSDR issue, it is the lan network. If you are connected directly to the computer then maybe try another cable. If you are connected through your home network, it may be the router, or some were in the system.
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Jay / NO5J

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I've been experiencing an increase from @0 to @2 times a day issues with DAX loosing it's connection to the radio. I haven't seen SmartSDR loose or drop it's connection though. I've been just restarting DAX when it happens, I'm also running Win 10. I suspect Win 10 updates are the cause, so I'm hoping some future update will solve the problem. I don't think it's a networking problem. I didn't see this problem before or immediately after upgrading to SSDR 2.0.17 so I don't think it's a Flexradio issue. I've got my fingers crossed, hoping there's a fix from Microsoft coming in tomorrow's Win 10 updates. I've only had the problem for about a week. I've got a system image backup from a month ago that I've been considering restoring to, to see if it has any effect, but I figure if it was a Win 10 update the problem would return fairly quickly, unless I block any updates done since the system image was created. My laziness prefers to just restart DAX.

Meanwhile it's on my "I Ought To Figure This Out!!!" list.

73 Jay / NO5J 
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Jay / NO5J

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Update: 09/06/2017, regarding my DAX problem.
It might have been a networking issue after all.
Yesterday I went over all the network devices, and Ethernet cabling, and spotted something odd.

I had the radio connected to a different gigabit switch that's used to distribute ethernet, to all four walls in the ham shack. The Ethernet cabling  runs inside the walls of the shack as does the Ethernet source line that routed from the Airport Extreme WiFi router in the house, out to the shack.

In order to provide a decent WiFi signal for the Maestro which I use on the shack desk. I used A Netgear gigabit WiFi router configured to act as a WiFi extender. The PC's in the shack all get there Ethernet connections from the Netgear router using 3' Ethernet cables. Not sure why I had left the radio cabled to distribution switch. Probably because it worked, and it was simpler than crimping together another shorter cable. I suspect the old, cheap 8 port distribution switch may need replacing.

Now that all the PCs, and the radio are all connected directly to the Netgear router with short cables, I haven't seen DAX loose it's connection ... yet.

All the static IP addressing, and port forwarding for the LAN is done by in the Airport Extreme in the house.

The cabling change seems to have fixed things.

I've seen cable jiggling, and jack exercising solve problems in the past.

I hate it when that happens!

I'll get over it, now that things are working again.   

Update: 09/07/2017
Make that "were" working again for a little while.
I just experienced another reoccurrence, of dropped DAX RX channel UDP streams.
DAX's error/status is the same, " Data not arriving from radio -- check firewall" the same firewall that still sending the SmartCAT, and SmartSDR metering/panadapter streams just fine. Only the DAX RX channel streams are failing. As always restarting DAX fixes it for a while.

73 Jay / NO5J

     
(Edited)
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Tim - W4TME, Customer Experience Manager

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Bill is correct that the error message you are receiving is network/communication related and not SmartSDR "shutting down".  You will need to describe your network configuration in much greater detail in order to get a better understanding of what is happening.
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Andrew Thall

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Currently the Flex is connected to the router via Ethernet cable. If I connect it to my computer directly, will that eliminate the disconnect? I know that I would lose the ability to operate remotely but that isn't all that important to me. I wish to thank all who replied.
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Tim - W4TME, Customer Experience Manager

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Maybe. You did not tell us how the PC was connected to the network, so we are missing 1/2 of the information needed to assess the situation.  Assuming the PC is connected to the same router via a wired Ethernet connection....

The Ethernet switch component in some consumer grade routers are not very robust and can be responsible for data errors and dropped packets when non-buffered traffic is processed through them, such as the traffic from the radio to the PC.  The primary consumer application for these routers is bursty, intermittent traffic (Internet browsing) not streaming VITA-49 data from an SDR.

Directly connecting the radio can lead to other challenges like Internet access for the radio and fewer Ethernet port buffers for traffic management.  It might make the situation better or worse.  If it makes it better, then the issue is probably in the network infrastructure.

My recommendation is to always use an external Gigabit Ethernet switch for connecting devices to your network. A single LAN connection established between the router and the Ethernet switch with nothing else LAN-wise connected to the router is ideal.  Manufacturer's like Linksys, Netgear and Cisco (small business class devices) have shown good results. 

And the problem could be your physical layer cabling.  Not all LAN cables are created equally.  We have had several support incidents where replacing the Ethernet cable cables resulted in a marked improvement.

Now if your PC is connected to your network via a wireless link, then there is a whole other set of issues that need to be investigated that are related to wifi network performance.  https://helpdesk.flexradio.com/hc/en-us/articles/203469425-Reasons-for-Wireless-Network-Performance-...
(Edited)
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Stan - VA7NF

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There is another condition that can appear as a network failure.
If the radio server hits an error condition that then performs an auto restart SSDR will think the network has failed.  Typically 1 minute later the radio will reappear.
This was common at pre-release 1.0.  I haven't heard about it since.