Re-image over Gig network

 Re-image over Gig network

We've been using C90LEWs for a few years now & re-imaging when needed using the Wyse Device Manager (WDM). Everything worked great until we upgraded the in-house network from 10/100 to gig. Now neither uploading an image to the WDM nor downloading a previously working image from WDM to a client will work. The two .PXE files download to the unit, the script starts running & then it fails, the units reboots & starts this process again.

If I put a 10/100 swicth between my gig network port and the C90LEW, everything works as expected. As I'd prefer not to find each device & attach a switch every time I need to re-image. The networking gear is Cisco if this helps at all.