2017-07-01 0:47 GMT+08:00 Patrick Klos <[email protected]>: > On 6/30/2017 11:18 AM, Axel Lin wrote: >> >> It's not easy to hit this issue, usually it needs to run for a couple >> hours or more than one day. >> But the symptom seems to be the same. >> >> BTW, my device always keep sending data to LTE through pppos. >> I'm wondering why the bad fcs usually happened on LCP packet. > > > Can you dump out the failing LCP packet? And maybe a few of the preceding > packets? What kind of connection do you have between the micro running lwip > and the LTE modem? Is there any way to tap that serial link and watch it to > compare that against your micro's serial receive routine? Hi Patrick,
I cannot tap the serial link now, but I will try to dump out the failing packet. My device keep sending data to a http server. i.e. compare to the the total traffic count, LCP packet is pretty small count. So i'm wondering why the bad fcs usually happens on LCP packet. I have to test it more times. Thanks for your comment, Axel _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
