Zayo vs Coent

Aaron1 aaron1 at
Sat Nov 10 03:45:59 UTC 2018

My cogent is pretty good... I had 10 gig for a few years, then dual 10’s Lag’d together for about year or so, and now 100 gig for about 2 months.  So it’s been about five or six years that I’ve been with cogent

They usually are knowledgeable when I talk to them and they are able to do what I ask of them.  They usually don’t have to hand me off to somebody else.

Cogent has good DDOS RTBH also.  I trigger a /32 and it’s immediately black holed in the cloud.

Cogent does however have an issue with ipv6 peering with google.  I currently have my v6 ebgp session shut down with them because of this.  Moving forward and doing more V6 in the future, I will have to figure out how to deal with us.

I’ve also had Spectrum, ATT, Telia, all good as well.  I’ve have no experience with Zayo, so I can’t speak to that


> On Nov 9, 2018, at 8:52 PM, Dan Stralka <mrsyeltzin at> wrote:
> We have 10G IPv4 circuits with both Zayo and Cogent getting full routes.  One major difference is the maintenance windows - when Cogent has maintenance, things get weird for hours at a time. 
>> On Fri, Nov 9, 2018 at 4:00 PM JASON BOTHE via NANOG <nanog at> wrote:
>> If you love yourself and your organization just peer with Zayo and not look back. 
>>> On Nov 9, 2018, at 14:19, Ca By <cb.list6 at> wrote:
>>> Zayo will provide you all of the internet
>>> Cogent will provide you with something that is not all internet, it is missing HE and Google on ipv6. 
>>>> On Fri, Nov 9, 2018 at 10:53 AM William Herrin <bill at> wrote:
>>>> Zayo is the former Worked well for me at previous $job.
>>>> Cogent is Cogent. Refer to the list archives for experiences with
>>>> Cogent.
>>>> Regards,
>>>> Bill Herrin
>>>> On Fri, Nov 9, 2018 at 10:19 AM Dovid Bender <dovid at> wrote:
>>>> >
>>>> > Hi,
>>>> >
>>>> > We are in a facility where my only options are Cogent or Zayo. We plan on getting a 10G connection for a web crawler using v4 only. Looking for feedback on either or (keeping the politics out of it).
>>>> >
>>>> > TIA.
>>>> >
>>>> > Dovid
>>>> >
>>>> -- 
>>>> William Herrin ................ herrin at  bill at
>>>> Dirtside Systems ......... Web: <>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the NANOG mailing list