netdemo cannot ping

Joel Sherrill joel.sherrill at OARcorp.com
Thu Apr 17 22:17:09 UTC 2008


fall4ufeng wrote:
> hi all:
> it can transmit tcp and udp packet when i use netdemo routine to test
> the netcard driver,but when i ping the target board from my pc, it
> turned out Requeset timed out error.
> the following information is what i catched from Ethereal
> Source Destination Protocol Info
> 00:19:5b:7c:ea:7f 00:15:f2:a0:1f:a8 ARP [Malformed Packet]
> 00:15:f2:a0:1f:a8 Broadcast ARP who has 59.77.20.39 ? Tell 59.77.20.11
> and my target board's mac address is 00:19:5b:7c:ea:7f, the ip address
> is 59.77.20.39
> my pc's MAC address is 00:15:f2:a0:1f:a8 , the ip addrees is 59.77.20.11.
> and i can not see any ICMP packet catched by Ethereal.
> any advices will be appreciated
Check the statistics for the driver using the netdemo application when
you ping.

It sounds like you are not getting an RX interrupt. You wouldn't need
interrupts
to work to TX data.

> 2008-04-17
> ------------------------------------------------------------------------
> fall4ufeng


-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
   Support Available             (256) 722-9985





More information about the users mailing list