Micrium TCP/IP Stack

niroshpw · ‎2008-09-15

Posted on September 16, 2008 at 07:09

niroshpw · ‎2011-05-17

Posted on May 17, 2011 at 09:55

Hello,

We are using Micrium's TCP/IP stack and are having a problem. Scenario:

* Code running on an IAR STR912 dev board which is connected to LAN through the ethernet connector.

* Code compiled using IAR tools

* PC, also on lan, used to ping IAR board.

* ICMP Ping replies come up in < 1ms

* ICMP Ping reply

* If connected to large LAN with broadcasts, Ping response time suddenly starts to exceed 1ms after a while....builds up higher and higher to be over a second....and then after a while, the whole MCU freezes.

Has anyone else seen this? Any help will be appreciated!

Thanks

Nirosh

dhoyen · ‎2011-05-17

Posted on May 17, 2011 at 09:55

Hi,

well, to debug your TCP/IP problem, you need a packet sniffer ->

your best friend is :

Ethereal, now the name is WireShark.

Just plug a Hub (WARNING : it's not a switch) between your network and your STR912 board. Connect ot this hub your Pc with Etheral and you will be able to look all frame.

If you use a switch, you will only look multicast and broadcast frame, it's not accurate but could be a good beginning for a 1st try.

Best regards.

Damien