On 20/07/2017, Hiers, David <david.hi...@cdk.com> wrote: > Hi, > We're looking to extend some services into Canada. While our lawyers dig > into it, I thought that I'd ask the hive mind about border restrictions. > > For traffic routing, is anyone constraining cross-border routing between > Canada and the US? IOW, if you are routing from Toronto to Montreal, do you > have to guarantee that the path cannot go through, say, Syracuse, New York?
Guarantee to whom? Back a few years ago when I looked into it, most of the traffic within Canada went through the US, e.g., since Bell didn't want to peer with anyone in Canada, you'd go something like YYZ - ORD - YYZ, clearly visible through the traceroute. Possibly somewhat better nowadays — there's been quite a few new IX POPs that popped up — but I doubt the scenario is a thing of the past. P.S. Just for the giggles — checked http://lg.he.net/ routing from core1.tor1.he.net to www.bell.ca — still goes through Chicago, to Montreal, from Toronto. :-) Going straight to Montreal, core1.ymq1.he.net, will route you to www.bell.ca (still in Montreal) through the peering at NYC. P.P.S. In other words — if someone wants guarantees, they better explicitly ask you for it. Cheers, Constantine. http://cm.su/