On Jun 01, 2015, at 17:46 , William Herrin <[email protected]> wrote: > On Mon, Jun 1, 2015 at 5:13 PM, Baldur Norddahl > <[email protected]> wrote: >> This is only a problem if you use so called tier 1 transit providers. >> >> The smaller fish in the pond have multiple transits themselves and will >> there by always have an alternative route available. > > Hi Baldur, > > Cogent is not a tier 1 (not a "transit-free") provider last I heard. > Maybe that's changed, but they weren't back when they had the > week-long peering dispute with Sprint.
Cogent has no transit. Hasn’t for years. During the peering outage, the only “transit” they had was to a single SFI network. I make no comments about Cogent’s reliability or peering or etc. — TTFN, patrick > Their business plan included > preventing their routes from reaching Sprint via paid transit. If you > were a customer of either carrier that week and you weren't multihomed > with full routes, you were not a happy camper. > > "Always" is such a strong. Yes, you're at higher risk if all your > upstreams are "transit-free" but using only backbone providers who > have paid upstream transit in their mix is no panacea. > > Regards, > Bill Herrin > > > > -- > William Herrin ................ [email protected] [email protected] > Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
