bl45p issue with traffic?

[damiri]

I have pSeries bl45p blade with 4 nics. Only one nic (nic 3) is currently connected to swith using passthru ethernet patch panel. Issue we have with this blade is following:

After certain period of inactivity, this blade is not reachable by ping nor rdp. We haven't trackted this period to tell you exactly time between. However, as soon we we over iLO port logon to the blade which is running W2003 StdEdt R2, and issue ping to something or just start web browser to open up msn.com, this blade becomes reachable over the network ...

Any ideas ?

damiri