Monitor WAN in a datacenter

Hi all,

As of right now we're using WAN Guard to monitor all our traffic on the WAN side, which is also where all our customers are running. WAN Guard is monitoring all our traffic on a span port, and reports if it sees something that is not normal in the traffic.

But now we are looking into a new solution, since WAN Guard is a bit funky to navigate, and doesnt work really well for us.

What do you guys use to monitor your WAN Traffic?

I'd like a product that can:

- Give a graph which IP has used how much of the traffic

- Send email about when there is a behavior in the traffic. It would be okay if it supported, so i could null route the ip by advertising it to the BGP.

- Easy to navigate and good looking, so yes it should not be complicated.

- Monitor several ISP's connections.

Thanks!