[177315] in North American Network Operators' Group
Re: Recommended L2 switches for a new IXP
daemon@ATHENA.MIT.EDU (Bill Woodcock)
Mon Jan 12 10:55:10 2015
X-Original-To: nanog@nanog.org
From: Bill Woodcock <woody@pch.net>
In-Reply-To: <79F0983B-8F78-4ED6-8925-3B9324AA79C0@mtin.net>
Date: Mon, 12 Jan 2015 10:54:38 -0500
To: North American Network Operators Group <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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> On Jan 12, 2015, at 10:34 AM, Justin Wilson - MTIN <lists@mtin.net> =
wrote:
> Cost per port is what we always look at. If we are going into a =
market where there won=E2=80=99t be much growth we look at Cisco and =
Force 10. Their cost per port is usually cheaper for smaller 10 Gig =
switches. You need something that is fairly robust.
We see a lot of IXPs being formed or upgrading with Cisco Nexus 3524 =
switches, which have 48 1G-10G SFP/SFP+ physical ports, license-limited =
to 24 active, upgradeable to 48 active.
FWIW, 83% of IXPs have 48 or fewer participants, and 70% of IXPs have 24 =
or fewer participants. And the failure rate of chassis-based switches =
is _way_ higher than that of stand-alone switches. So we never =
recommend that an IXP buy a switch larger than necessary to accommodate =
18 months reasonably-projectable growth.
-Bill
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