Netduino + 2 ethernet crashes

Hello I recently purchased a N+2. I have problems with the ethernet. continuously pinging the N+2, after a few minutes, the N +2 crashes. At this point I have to turn off the power to reset the device.

 

The STM32 chip and the ENC28J60 chip are a little warm.

 

any ideas?

that sounds like the garbage collection fails at some point, if you're debugging while pinging the device you should see "out of memory exception", it's normal that the chips get a little warm.

Hi Marco, How much corporate network management traffic is on your corporate network? Netduino Plus 2 offloads some of the TCP stack to the dedicated ENC28J60 chip, but it's technically still possible to ping-flood or otherwise DoS the board. Can you configure the network port you're plugged into to only send traffic designated for your board's IP address (rather than all broadcast network traffic)? If you plug the board into your home network or a separate network, does it work alright then? Chris

Hi Chris if I plug the card into the home network I dont' have problems, everything works perfectly. I have no control over the network configuration. I do not have the opportunity to request a network configuration for my Netduino. I'm sorry it's hard for me to find the problem by analyzing the lan packets.

thanks for reply

Hi Marco, It sounds like the issue is related to network configuration (most likely a huge number of packets which are flooding the Netduino Plus 2's network stack). If you can analyze the traffic and give us a better idea as to what the Netduino is seeing, we can help work through potential solutions (or improvements to the core lwIP network stack). Unfortunately there's no good way for us to diagnose a remote network-related issue without traces...I wish there was. Chris

Hello,

 

I have the same problem, after some time, I do not see any network traffic.

I call every second a http page from the netduino . After a minute comes no answer from netduino.

No Ping and no Socket traffic.

 

Wireshark recording:

https://dl.dropboxus...orkcrash.pcapng

 

There is no exception and the program on netduino run.

 

Netduino Informations:

 

ClrInfo.targetFrameworkVersion: 4.2.0.0 SolutionReleaseInfo.solutionVersion: 4.2.2.0 SolutionReleaseInfo.solutionVendorInfo: Netduino Plus 2 (v4.2.2.0) by Secret Labs LLC SoftwareVersion.BuildDate: Jan 9 2013

 

I hope there is a solution.

 

Best regards 

Rensky

I would like to contribute something. I've tried different switch. 2 from Dlink, one from centreCOM and a hub from CentreCOM.

If Netduino connect to DLink DES-1008D or DLink switch run reliably. 

If Netduino connect to DLink DGS-1008D or DLink switch run reliably. 

 

If Netduino connect to CentreCOM MR815T (10MBit Hub) the connection broke after 1-4 minutes.

(Minimal network environment with 1 PC, hub and the Netduino)

 

If Netduino connect to CentreCOM FS724i (100MBit Switch) the connection broke after 1-4 minutes.

 

Best regards

Rensky