No dhcp offers when booting from network

I have 2 managed switches, a SLM2048 and a SRW2048.
Neither of these switches work with thin clients booting from the network.
My configuration:
A Ubuntu LTSP server:
More information about this here -> https://help.ubuntu.com/community/ThinClientHowto
The Thin client:
Intel mini ITX motherboards(D945GCLF2D) with 2gig of ram and setup in the bios to boot from the network.
Some background info:
When the thin client boot on a unmanaged switch it find the Ubuntu dhcp server and boots right away.
But when put on the SLM2048 or SRW2048 on the same network the thin client is unable to get any DHCP offers.
Window and macs pick up dhcp address fine and all devices show up on the switch fine, its just no luck boot thin clients.
any help with this would be appreciated.
Thank you

Hello,
Have you tried removing broadcast storm Control on the switches in question or alternatively setting Broadcast Storm Control to 300 kbps? In case number 610813169 this technique was used to resolve such an issue. If not, you will likely need to open a case with the SBSC.
Regards,
Christopher

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