12-05-2010 08:46 PM
You haven't said what version of the SMI-S Agent you are using or what version of switch FW you are running.
The SMI-S Agent appears tied to the Switch FW.
So if you're running 6.4.x FW then you want the 120.11.0 Agent (I have tested this and know that it works).
From memory, I tried the older 120.09.0 Agent with 6.4.x FW and also had the authentication issue.