Is there a simple (cheap) way to view per VLAN internet traffic?

[AMorrison]

Does anyone know of a simple solution that shows how much internet bandwidth an IP subnet or VLAN is using?

When we look at Network Wide/Clients/Only security appliance clients and put in a subnet, the graph scaling is so bad you can't see how much bandwidth is being used by the subnet. Hopefully, this screenshot shows the "issue" - it gets worse the more overall bandwidth is shown as the scale goes up to 1gb/sec: It is the yellow part of the graph I need a more accurate reading of.

[alemabrahao]

Have you tried a filter like this?

[AMorrison]

Thanks, but that doesn't change the graph scale, which is the issue for me. 

[alemabrahao]

So, open a support case.

[ww]

You could look at using netflow to a cheap/free netflow tool

[PhilipDAth · Accepted solution]

If you to do this ongoing, you would week to use netflow like @ww mentions.

If this is short term, and you are trying to do a one-off diagnosis - capture 5 minutes of traffic and put it into Wireshark and use its statistics function to break the traffic down.

[AMorrison]

Yes, it is for long term viewing as in days and weeks. Netflow is cool, but very expensive as we have multiple sites/firewalls. Thanks though.