Cacti - http://www.cacti.net/

Exported Graphs

Graph - switch8006 - Traffic - 1/0/13 - node 0 IPMI
Hourly (1 Minute Average)

Daily (5 Minute Average)

Daily (5 minute snapshot)

Weekly (30 minute snapshot)

Weekly (30 Minute Average)

Monthly (2 Hour Average)

Monthly (2 hour snapshot)

Yearly (1 day snapshot)

Yearly (1 Day Average)