probing SwOS

Device i’m probing is 250GS. When I select a port using The Dude 3.6 or 4.0 beta3, it disappears once probed and I get an error on the link.

I have tested snmpget from linux box using snmp v1 protocol and i didn’t get a single failure, so i’m pretty sure its messed up in the dude server.

i have same problem with 250GS and dude is there solution