M3-SW16-8E switch with e1000 network card

Hello,

We have M3-SW16-8E modules connected with e1000 card.  But there is no 
traffic between machines we see with "tcpdump".

We use high quality cat 5 cables.  ethtool said it is running 1000 full 
duplex mode.

We also tried to connect two machines using cross-over cable and they can 
talk to each other.

Have anybody give any hint or experience on using the module with e1000 NIC 
?

Thanks.



Ricky.