Monitor UDP traffic

I need to graph UDP traffic levels on an MT router.

I am fairly new to SNMP andhave Dude setup and collecting/graphing interface data from numerous MT routers on our network.

Now I need to graph UDP traffic on an interface. I’ve search quite a bit and can’t figure out how to do it.

Is a probe the thing to use or ??. Does anybody have an example of this or similar that could guide me.

Thanks!

You need Netflow or actual traffic collection to determine how much UDP vs TCP traffic is on a port.

Lebowski

thanks lebowski!

Anybody have recommendations on a free (if there is one) netflow system?

Scrutinizer is a freebie but it only keeps 1 day of data. I would double check sourceforge and alternative.to.