We have about 100 custom boards based on the G120 running in the field. The system is extended with ethernet, like the G120E and hosts a webserver . Most of the systems running fine although at a few customers the webserver gets unresponsive after some random time. Those customers with problems are mostly larger companies with large networks using a number of (managed) network switches.
I discovered at one of those customers they are using security cameras to broadcast video over the network using multicast traffic, which could be a source for the problem.
To test the impact of multicast traffic I setup a test environment (see attached image). One laptop in the test setup is running VCPlayer to stream a video file on 188.8.131.52, emulating the security camera.
A second laptop hooked up to the network is running a monitor program (KS-Hostmonitor ) to check if the web server on the G120 is still responsive. The monitor loads a webpage from the G120 system every 5 seconds.
This test shows that after less then 2000 page loads the G120 becomes unresponsive. This test was repeated many 5 days.
So the next step was to repeat the same test without VLCPlayer and / or to block multicast traffic at the managed switch port that connects the G120 device.
Doing so shows that the G120 remains responsive.
Any feedback is welcome!
Update: How to share an attachment ?