On Sep 17, 2013, at 3:15 PM, Niels Bakker <niels=na...@bakker.net> wrote:
> I don't know of any IXP that does this. Industry standard is as you and
> others wrote before: the 5-minute counter difference on all customer-facing
> ports, publishing both input and output bps and pps.
> I guess MRTG is to 'blame' for these values more than anything.
Serious question, at an IXP shouldn't IN = OUT nearly perfectly?
Most exchanges do everything possible to eliminate broadcast packets, and they
don't allow multicast on the unicast VLAN's. So properly behaved you have a
bunch of routers speaking unicast to each other. The only way to get a
difference is if there is packet loss, IN - loss = OUT.
--
Leo Bicknell - bickn...@ufp.org - CCIE 3440
PGP keys at http://www.ufp.org/~bicknell/
