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Community Member

Bandwidth Issues

I am relativity net to networking so I have some basic question. I was wondering if i can get some light shed on the following:

How can you determine who is a bandwidth hog on the network? and can you tell how much bandwidth was being used. I know there are tools out there that help with this, but i wanted to see what i can do from the cli when logging into a router.

Thanks

4 REPLIES
Cisco Employee

Re: Bandwidth Issues

Hi Henry,

You need to enable NetFlow or IP Accounting on the router, so it can gather the flow statistics.

HTH,
Lei Tian

Sent from Cisco Technical Support iPhone App

Silver

Bandwidth Issues

Hi Henry - Netflow is the tool that allows you to do this. You enable it on an interface and then export the information to a management platform (netflow collector) that charts top talkers / conversations etc.

http://en.wikipedia.org/wiki/NetFlow

Obviously you need the backend infrastrcture to collect this data. If you don't then your choices are more limited. NBAR can be enabled on a per interface basis too and that will give you some info.

Or if you have it to hand you can use an inline protocol analyser.

Community Member

Bandwidth Issues

Thanks for the replies. Netflow is definilty something I have to look into.

Community Member

Re: Bandwidth Issues

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