[114608] in North American Network Operators' Group
Re: NPE-G2 vs. Sup720-3BXL
daemon@ATHENA.MIT.EDU (Leo Bicknell)
Fri May 15 22:42:04 2009
Date: Fri, 15 May 2009 22:41:55 -0400
From: Leo Bicknell <bicknell@ufp.org>
To: NANOG list <nanog@nanog.org>
Mail-Followup-To: NANOG list <nanog@nanog.org>
In-Reply-To: <10898.1242440712@turing-police.cc.vt.edu>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
--VbJkn9YxBvnuCH5J
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
In a message written on Fri, May 15, 2009 at 10:25:12PM -0400, Valdis.Kletn=
ieks@vt.edu wrote:
> Did you check PCI bus bandwidth? That's probably going to be the biggest
> constraint on "a few 10GBE interfaces" if they all get going full blast.
> Remember that each packet is going to burn bandwidth twice - once in and
> once out...
PCIe, x8 or x16, which is serial point to point.
http://www.csc.kth.se/~olofh/10G_OSR/10Gbps.pdf=20
25 Gb/sec across 4x10G ports on higher end but far from topped out
hardware.
--=20
Leo Bicknell - bicknell@ufp.org - CCIE 3440
PGP keys at http://www.ufp.org/~bicknell/
--VbJkn9YxBvnuCH5J
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (FreeBSD)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=ZpMl
-----END PGP SIGNATURE-----
--VbJkn9YxBvnuCH5J--
