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rocca
Start.ca
Premium
join:2008-11-16
London, ON
kudos:23
reply to hmph

Re: TorIX Upgrade

BGP makes path selection by prefix size, and then AS path length (not number of hops) and it appears they are directly connected to Bell in their Montreal DC, so their router looks at these options:

577 (Bell) -> 40788 (Start)
11670 (TorIX) -> 40788 (Start)

...so you have equal length paths, one you have to use your backhaul to Toronto for and one you get to dump off in Montreal. Before the holidays we sent them a direct peer request via the TorIX portal, didn't get a response - I'll followup sometime next week. If we did directly peer then the TorIX ASN becomes removed from the equation and it'd just look like:

577 40788
40788

...in which case the later would be selected (assuming they don't pad out their connection to Toronto).