[180380] in North American Network Operators' Group
Re: BGP Multihoming 2 providers full or partial?
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Mon Jun 1 17:53:21 2015
X-Original-To: nanog@nanog.org
From: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <CAP-guGW7v9xRROh4p1Cna445esKxJu7kNayGNR=HG7FDwEWVJw@mail.gmail.com>
Date: Mon, 1 Jun 2015 17:51:22 -0400
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Jun 01, 2015, at 17:46 , William Herrin <bill@herrin.us> wrote:
> =08On Mon, Jun 1, 2015 at 5:13 PM, Baldur Norddahl
> <baldur.norddahl@gmail.com> wrote:
>> This is only a problem if you use so called tier 1 transit providers.
>>=20
>> The smaller fish in the pond have multiple transits themselves and =
will
>> there by always have an alternative route available.
>=20
> Hi Baldur,
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> 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=E2=80=99t for years.
During the peering outage, the only =E2=80=9Ctransit=E2=80=9D they had =
was to a single SFI network.
I make no comments about Cogent=E2=80=99s reliability or peering or etc.
=E2=80=94=20
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.
>=20
> "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.
>=20
> Regards,
> Bill Herrin
>=20
>=20
>=20
> --=20
> William Herrin ................ herrin@dirtside.com bill@herrin.us
> Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
