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

Exported Graphs

Graph - Ethernet50/1 - IIX1|Internet B - 192.114.62.105 - Traffic via IIX1
Hourly (1 Minute Average)

Daily (1 Minute Average)

Weekly (5 Minute Average)

Monthly (5 Minute Average)

Yearly (5 Min Average)