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Mr. Geist,

What are your thoughts on Canadian ISPs using major US cities such as Chicago, Seattle and New York for parts of their own backbone?

Large Canadian ISPs will not peer at Canadian IXPs as there is no financial incentive. However, my question was about Canadian ISPs preferring to take paths through the US for their own connectivity. For Instance, traffic residing wholly within Bell's AS traverses Chicago from Winnipeg to Toronto. This is not an issue that can be resolved by altering transit or peering arrangements.