[188315] in North American Network Operators' Group
Re: Cogent - Google - HE Fun
daemon@ATHENA.MIT.EDU (Todd Crane)
Tue Mar 15 00:50:48 2016
X-Original-To: nanog@nanog.org
From: Todd Crane <todd.crane@n5tech.com>
Date: Mon, 14 Mar 2016 22:50:43 -0600
In-Reply-To: <397C90CE-ABE1-4F28-87B2-EAFA6B16FDE6@n5tech.com>
To: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
> This is only tangentially related but it looks like HE has surpassed Cogen=
t on IPv4 adjacencies. That said the source probably suffers from a selectio=
n bias at the very least.
>=20
> http://bgp.he.net/report/peers
>=20
>=20
Hit reply by mistake instead of reply all.=20
> Todd Crane
>=20
>> On Mar 14, 2016, at 8:40 PM, Matthew D. Hardeman <mhardeman@ipifony.com> w=
rote:
>>=20
>> It looks like Google is experimenting with a change in course on this iss=
ue.
>>=20
>> Here=E2=80=99s a look at the IPv6 routing table tonight on my router bord=
ering Cogent.
>>=20
>> *>i 2607:f8b0:4013::/48
>> 2620:121:a000:f0::2(fe80::618:d6ff:fef1:c540)
>> 0 150 0 15=
169 i
>> * 2001:550:2:22::1d:1(fe80::12f3:11ff:fe29:2c24)
>> 0 90 0 17=
4 6461 15169 i
>> *>i 2607:f8b0:4014::/48
>> 2620:121:a000:f0::2(fe80::618:d6ff:fef1:c540)
>> 0 110 0 69=
39 6461 15169 i
>> * 2001:550:2:22::1d:1(fe80::12f3:11ff:fe29:2c24)
>> 0 90 0 17=
4 6461 15169 i
>> *>i 2607:f8b0:4016::/48
>> 2620:121:a000:f0::2(fe80::618:d6ff:fef1:c540)
>> 0 150 0 15=
169 i
>> * 2001:550:2:22::1d:1(fe80::12f3:11ff:fe29:2c24)
>> 0 90 0 17=
4 6461 15169 i
>>=20
>>=20
>> This is only 3 IPv6 prefixes (out of 47 prefixes seen in my IPv6 routing t=
able). Two of these prefixes I see via direct peering with Google and, alte=
rnatively, via Cogent through Zayo transit. One of these prefixes doesn=E2=80=
=99t advertise in Google=E2=80=99s direct peering session (at least not in m=
ine, but HE picks it up via Zayo and Cogent picks it up via Zayo).
>>=20
>> All of these are /48 subnets of their greater 2620:f8b0::/32 prefix, whic=
h does show up in both their direct session and in HE via Zayo.
>>=20
>>=20
>>> On Mar 13, 2016, at 9:31 AM, Dennis Burgess <dmburgess@linktechs.net> wr=
ote:
>>>=20
>>> In the end, google has made a choice. I think these kinds of choices wil=
l delay IPv6 adoption. =20
>>>=20
>>> -----Original Message-----
>>> From: Damien Burke [mailto:damien@supremebytes.com]=20
>>> Sent: Friday, March 11, 2016 2:51 PM
>>> To: Mark Tinka <mark.tinka@seacom.mu>; Owen DeLong <owen@delong.com>; De=
nnis Burgess <dmburgess@linktechs.net>
>>> Cc: North American Network Operators' Group <nanog@nanog.org>
>>> Subject: RE: Cogent - Google - HE Fun
>>>=20
>>> Just received an updated statement from cogent support:
>>>=20
>>> "We appreciate your concerns. This is a known issue that originates with=
Google as it is up to their discretion as to how they announce routes to us=
v4 or v6.=20
>>>=20
>>> Once again, apologies for any inconvenience."
>>>=20
>>> And:
>>>=20
>>> "The SLA does not cover route transit beyond our network. We cannot rout=
e to IPs that are not announced to us by the IP owner, directly or through a=
network peer."
>>=20
