On Tue, 25 Nov 2014 17:36:47 +0200, Martin T said: > bit weird question, but is it possible to determine > relationship(Internet transit, settlement-free peering, etc) between > the operators based on import and export statements in aut-num object?
You can determine who is "upstream" and "downstream" from that. You can't tell if it's paid transit or free peering, because technically they're the same on the wire. All that's different is the economic motivations that allow/cause the routing jocks from the two sites involved to connect a pipe and put it in production.
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