Haven't tried it yet, but Juniper's netflow export is based on their
packet sampling. This means it gives you statistics, not real numbers,
which is probably OK for b/w management, but poor for billing. Another
note: packet sampling is capable of handling a fixed number of packets/s,
which means that as the number of packets going through the box increases,
your maximum possible percentage of captured packets decreases.
Nik Weidenbacher nikw@sgns.net
Network Engineer 215-351-1067
Sungard Network Solutions
On Sun, 26 Nov 2000, john heasley wrote:
> On Mon, Nov 27, 2000 at 12:35:14PM +1000, Terence darkened my spool with the following:
> >
> > I'm looking for some pointers on usage based billing with juniper M20's,
> > anyone done work on this? know someone? Not SNMP stuff, more along the
> > lines of NETFLOW a la cisco...
>
> try the netflow. you need an IP II (aka SSB-E, or something like
> that) + junos 4.2.
>
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