When adding some of the C5 switches into Policy Manager (PM) we get this error:
ERROR : SNMP Error: 129 (129). The attribute(s) contained in the failed SNMP packet were: etsysPwaSystemEnhancedModeRefreshTime.0 (No Such Instance currently exists at this OID)
The switch is added into PM, then added into the NAC. The ports are then retrieved in PM and uplinks/interswitch ports are frozen. Then on the Authentication tab, the multi-user is set and authentication status is set to enable, adjust the auth type precedences and then apply. That is when the preceding error appears in Netsight and the ports do not get set to inactive/default roles. It seems very inconsistent and the firmware version does not seem to matter.