Monitoring CPU and Memory for Cat6506

Monitoring CPU and Memory for Cat6506

Hi,
Kindly help me,as i am triying to monitor CPU and Memory for Cat6506 Switches. This gives me following error.
E2002: Specified OID is not implemented.
Kindly help me if incorrect configuration or from where i can get the correct
MIB/OID for abov switches.
community is proper.

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