I need know like is consumption the bandwidth link by application (http, ftp, smtp) in a router with C2801-ADVIPSERVICESK9-M IOS
I enable in the router nbar protocol-discovery but it does not indicate the consumption in percentage on the bandwidth during a certain period of time
To enable you need "ip nbar protocol-discovery" on the interface and (I think) "ip cef" global command.
"show ip nbar protocol-discovery interface
should show you an actual bitrate. If you need a percentage divide the bitrate shown by the max bandwidth available on the interface. Also I think that the reporting period can be controlled with the "load-interval" interface config command - default is 5 minutes but can go as low as 30secs