North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Peering matrix information at IXPs
On Wed, Jun 13, 2007 at 06:47:30PM +0200, Daniele Arena wrote: [snip] > Traffic matrices (at least up to now and AFAIK) have only been built > by traffic measurements by IXPs whose switches all support sFlow. Not > all switches do, so not many IXPs have that feature. > > Several IXPs have traffic matrices built on data entered manually. > That is usually not too reliable as people forget to update the > peering data after having updated their peerings on the routers. Not to mention that even at member-driven IXes, you will find members who believe they can keep their AS-level adjacencies secret and opt-out. IMO, a major reason you don't see much traction for this data in larger/non-co-op IXes (most of the US, sadly). Cheers, Joe -- RSUC / GweepNet / Spunk / FnB / Usenix / SAGE
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