Our Server PE 2500 (ST # 935CK01) is connected to PC 5212 (ST # H56KL21) on port 8. Constantly the server is loosing connectivity (don't resolve ping from or to server). The server is in DHCP mode.

 

We did these changes yesterday : upgraded the PC 5212 to latest firmware (v3.1.0.15, A05) and disabled spanning tree for DELL technician recomendation but today the server is loosing connectivity. If I reload from hyperterminal console the PC 5212 restore the connectivity but some minutes later loose again.

 

How can I know what is the problem on PC 5212?

Is it possible to run some diagnostics for PC 5212? (How?)

 

THANKS!