[178187] in North American Network Operators' Group
Re: OT - Small DNS "appliances" for remote offices.
daemon@ATHENA.MIT.EDU (David Reader)
Thu Feb 19 09:52:45 2015
X-Original-To: nanog@nanog.org
Date: Thu, 19 Feb 2015 14:52:42 +0000
From: David Reader <david.reader@zeninternet.co.uk>
To: nanog@nanog.org
In-Reply-To: <2a0ea2ff5079661c0e9863348943e992@visp.net.lb>
Errors-To: nanog-bounces@nanog.org
On Thu, 19 Feb 2015 15:26:36 +0200
Denys Fedoryshchenko <denys@visp.net.lb> wrote:
> As far as i know, Raspberry PI ethernet over USB might be fine for DNS
> too, but before it had issues with
> large data transfers (ethernet driver hangs). No idea about now.
On Thu, 19 Feb 2015 15:26:36 +0200
Denys Fedoryshchenko <denys@visp.net.lb> wrote:
> As far as i know, Raspberry PI ethernet over USB might be fine for DNS
> too, but before it had issues with
> large data transfers (ethernet driver hangs). No idea about now.
AIUI the problem with the RPi isn't so much that the Ethernet NIC sits on a USB interface, it's that the RPi USB interface is very basic and requires a great deal of host interaction to work. It presents a very high interrupt load, and that can lead to problems.
Remember that the RPi, fantastic as it is, was developed as a low cost educational aid. It can be used with great success in other fields, but you should consider its limitations.
I'm using several to connect sensors, actuators, and such to a private network, which it's great for - but I'd think at least twice before deploying one as a public-serving host in user-experience-critical role in a remote location.
d.
