[AusNOG] Deep buffer switches and CDN networks

[Tom Paseka]

everything depends on your application and how you're moving traffic.

if you lots of east-west flow (between equal speed interfaces, especially
in many to one) you'll need buffers. If you're doing north to south traffic
with interface change, you'll likely need buffers.

The choice here might not have been for deep buffer, but for other
capabilities (forwarding, route table size, etc). Dave mentions from a
question there is no east-west traffic, everything is south-north.

On Wed, May 22, 2019 at 5:46 AM Jason Leschnik <jason at leschnik.me> wrote:

> Hi Noggers,
>
> I just finished watching the NANOG presentation of Netflix openconnect[1],
> I noticed that their core switch of choice was an Arista 7500E which is a
> deep buffer switch. I remember seeing a lot of comments around buffer bloat
> for deep buffer switches. Would this be considered an acceptable use case
> for this type of switch in the DC?
>
> Has anyone got experience with ideal switch types (shallow, deep buffers)
> for edge CDN network deployments?
>
> [1] - https://www.youtube.com/watch?v=tbqcsHg-Q_o
>
> Regards,
> Jason.
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