[188191] in North American Network Operators' Group
Re: Cogent - Google - HE Fun
daemon@ATHENA.MIT.EDU (Matthew D. Hardeman)
Thu Mar 10 17:58:24 2016
X-Original-To: nanog@nanog.org
From: "Matthew D. Hardeman" <mhardeman@ipifony.com>
In-Reply-To: <7840B98C-81FB-407C-91A3-98EC566C61AD@init7.net>
Date: Thu, 10 Mar 2016 16:58:20 -0600
To: Fredy Kuenzler <kuenzler@init7.net>
Cc: North American Network Operators' Group <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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Freddy,
As there is no IPv6 transit between HE and Cogent, this would have the =
effect of isolating ones network services from the single-homed =
customers of Cogent. I=E2=80=99m not sure that many of us could get =
away with that. Further, I=E2=80=99m not sure that it=E2=80=99s =
appropriate to punish the single-homed Cogent customers. I=E2=80=99ll =
grant, this is just what Google has done, but they=E2=80=99re well =
positioned to weather that storm and have a level of visibility and =
brand loyalty that will allow them to have a chance of success at it.
I think the softer approach of reducing the relevancy of Cogent=E2=80=99s =
IPv6 transit service and indeed the relevancy of peering with Cogent for =
IPv6 is a way forward that more of us could get behind.
Thanks,
Matt Hardeman
> On Mar 10, 2016, at 4:42 PM, Fredy Kuenzler <kuenzler@init7.net> =
wrote:
>=20
> This would work for those which are using IPv6 transit from Cogent.
>=20
> For anyone else which is using IPv6 transit from Hurricane Electric =
and some other suppliers such as L3 or NTT: to set the community 'do not =
announce to Cogent' only on every other transit but HE would help to =
isolate Cogent without much collateral damage. It would support =
Google/HE's position. And maybe help to bring back Cogent onto a =
cooperative track, after all.
>=20
> --
> Fredy Kuenzler
> Init7 (Switzerland) Ltd.
> St.-Georgen-Strasse 70
> CH-8400 Winterthur
> Switzerland
>=20
> http://www.init7.net/
>=20
>=20
>> Am 10.03.2016 um 23:19 schrieb Matthew D. Hardeman =
<mhardeman@ipifony.com>:
>>=20
>> I have contemplated whether such mechanisms matter to Cogent, etc.
>>=20
>> I=E2=80=99m inclined to think that if Google is willing to pull the =
routes and they still don=E2=80=99t blink, then certainly us smaller =
shops aren=E2=80=99t going to impact them=E2=80=A6
>>=20
>> However=E2=80=A6 If enough prefixes disappear from the _apparent_ =
Cogent table as viewed by outsiders, this may ultimately impact their =
sales of new interconnection=E2=80=A6.
>>=20
>> For those of us multihomed with Cogent and other transit providers on =
IPv6 there is a less drastic way to impact the perceived value of =
Cogent=E2=80=99s IPv6 routing table to outsiders and especially to =
Cogent=E2=80=99s peers =E2=80=94 and one that still doesn=E2=80=99t =
negatively impact the single-home customers of Cogent:
>>=20
>> "set community 174:3000" on your IPv6 advertisement to Cogent. This =
will constrain the advertisement to Cogent and Cogent=E2=80=99s =
customers only. For good measure, prepend your own AS to this =
advertisement at least a couple of times, potentially discouraging even =
Cogent customers who see the route from using it if they have other =
transit. It will prevent the path via Cogent being selected by Cogent =
IPv6 peers versus your other transit providers.
>>=20
>>=20
>>> On Mar 10, 2016, at 3:47 PM, Fredy Kuenzler <kuenzler@init7.net> =
wrote:
>>>=20
>>> Am 10.03.2016 um 22:25 schrieb Damien Burke =
<damien@supremebytes.com>:
>>>> Anyone who is multihomed with cogent ipv6 in their mix should =
shutdown their IPv6 bgp session. Let=E2=80=99s see if we can make their =
graph freefall.
>>>=20
>>>=20
>>> Alternative:
>>>=20
>>> set community [do not announce to Cogent]
>>>=20
>>> *SCNR*
>>=20
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