Problem With PXE Boot With DELL OPTIPLEX 380

[sysinstaller]

Hi,
     At our institute there are around 300 DELL OPTIPLEX 380 Pcs. When I try to remote boot it with ploplinux pxe booting. I got error 'Unable to get dhcp ip.."
can any one guide me whats exact problem ?

(All other DELL models are working very fine with ploplinux)

[Elmar]

hi,
what kind of network card is used in that dell?

please boot local with ploplinux (cd or usb) and post the output of dmesg and lspci as attachment.

regards
elmar

[sysinstaller]

Thanks elmar,
I will post this attachments tommorow.
Thanks in advance....