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How to measure the traffic of internet radio in my network bandwidth?

Hi,
We have come to a point we need to decide if we want to block/ban the internet radio used by users in office during the business hours. But my boss wants me to prove that the internet radio/TV does really use up the network bandwidth to some extent.
Can you tell me if there is any tool/utilities available for this purpose?
Thanks.
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Internet Radio, streaming, etc, will kill network performance and should not be allowed at the workplace.  If you have a router that is capable of netflow, you could configure netflow and gather bandwidth statistics on internet radio use.  You would need a netflow collector.  Solarwinds has a great one.  Here is a link to a 30 day free trial.

http://www.solarwinds.com/products/network-traffic-analyzer/info.aspx?gclid=CKjZ_pyD5KwCFYtR7AodsV9Aow&CMP=KNC-TAD-GGL-US_BRAND-N-DL-US&ef_id=EadO2RnpV0UAAAKm:20111202183313:s


Author

Commented:
I guess the problem for me is to verify if my router/firewall is netflow-capable or not. I currently have two circuits, with a router CISCO1841 and another Adtran Netvanta 3200. My firewall is Cisco ASA 5510.
Do you know if they are netflow-capable? Also can I do netflow on the firewall level?
The ASA5510 is not capable of netflow, but the Cisco 1841 is.  

Author

Commented:
Good to know Cisco 1841 is netflow capable. It sits in my company's premise but is controlled by ISP. Would that be an issue when I install and configue netflow? -- I mean how much work/change needs to be done at the router?
Thank you for your patience and kindness to a newbie like me.
Do you have access to make changes to the router? If so you need to configure snmp on the router.  Below is an example:
Router(config t)# snmp-server community password RO

After that you need to configure netflow on the router.  Get into the interface you want to collect netflow on.  Let's say its FastEthernet0/1.  See below:

Router(config)#int fa0/1
Router(config-if)# ip route-cache flow
Router(config-if)# exit

Then enter the following:

Router(config)# ip flow-export source FastEthernet0/1 (this is whatever port you want to collect netflow data on)
Router(config)#ip flow-export version 5 origin-as
Router(config)#ip flow-export destination 1.1.1.1 2055 (this is the IP of your neflow server

You then need to add this router to your netflow collector (solarwinds), then you can start to gather netflow statistics.  I hope this helps.