Hi, > I have no clue; I don't really understand what you have changed so it is > hard to know. For example: if I send ten SMPs like: for (i=0;i<10;i++){ umad_send(portid, agentid, msg, len, timeout, repeats); } timeout > 0! than only the first one is sent and all other umad_send calls returning with -5. Thanks Michael