cacti SNMP and Network graph

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https://www.cacti.net/

Cacti is a complete network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality.

Part 2 - Add a Cisco switch, Graph an interface, CPU & temperature
Part 3 – Create a data source using SNMP OID
Part 4 - Install Host Templates to easily monitor an APC UPS
Part 5 - Change Cacti Graph from Centigrade to Fahrenheit

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