[181595] in North American Network Operators' Group
Re: CDNs for carriers
daemon@ATHENA.MIT.EDU (Jared Mauch)
Mon Jun 29 09:44:22 2015
X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <CAL9jLaY2+sdsdeL+QN2iEuN_PzSAqKiLYxgFQq27AMLpZbDzHw@mail.gmail.com>
Date: Mon, 29 Jun 2015 09:44:18 -0400
To: Christopher Morrow <morrowc.lists@gmail.com>
Cc: nanog list <nanog@nanog.org>, Ramy Hashish <ramy.ihashish@gmail.com>
Errors-To: nanog-bounces@nanog.org
> On Jun 29, 2015, at 9:33 AM, Christopher Morrow =
<morrowc.lists@gmail.com> wrote:
>=20
> On Mon, Jun 29, 2015 at 8:53 AM, Ramy Hashish =
<ramy.ihashish@gmail.com> wrote:
>> do you have any figures about how much this
>> recommended CDN save from the Internet BW?
>=20
> isn't that going to wholey depend on your traffic mix/matrix?
> Wouldn't it be helpful to look at where your users send/receive
> traffic and then figure out the best next addition?
>=20
> Maybe your best bet isn't another CDN, but better/more/wider peering
> with folk 2+ AS hops out from your current next-hop-as set?
I would say that step 1 is to figure out where your traffic is going. =
Generically saying =E2=80=9CCDN=E2=80=9D isn=E2=80=99t enough to know =
what the results are.=20
Once you=E2=80=99ve determined where the traffic is going/coming from =
you can start to make educated decisions vs just =E2=80=9CCDN=E2=80=9D =
guessing. An enterprise profile looks much different than residential =
for example.
I recall some companies calling our NOC =E2=80=9Cunder attack=E2=80=9D =
because their software update server went down and the machines failed =
safe and were all fetching software updates from =E2=80=9Cthe =
internet=E2=80=9D vs the internal caching proxy.
If you have money to spend, there are a few vendors out there from cheap =
to $$$$ that will help you look at the traffic to make these decisions.
If you don=E2=80=99t have money to spend, look at NFSen/pmacct. You may =
be able to spin up a low-cost VM at your local cloud provider (e.g.: =
digital ocean).
Remember to export both your v6 and v4 (ip classic) flows as these can =
widely differ.
Look for common ASNs or IP ranges.
I=E2=80=99m sure there=E2=80=99s numerous consultants on the list that =
would also assist you in this process.
Hope this helps.
- jared
