--_000_DB6P190MB02803D87B263C1D3C3672993C8B50DB6P190MB0280EURP_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Fabrice, If you choose to have jumbo frames all over, then when the traffic goes out= side of your "jumbo frames" enabled network it will be necessary to be frag= mented back again to the destination MTU. Most of the datacenters will prov= ide services to the outside world where the MTU is 1500 bytes. In this case= , you will slow down your performance because your router will be doing the= fragmentation. So I would always use jumbo frames in the datacenter for ea= st/west traffic and standard (1500 bytes) for north/south traffic. Moacir ---------------------------------------------------------------------- Message: 1 Date: Mon, 7 Aug 2017 21:50:36 +0200 From: Fabrice Bacchella <fabrice.bacchella@orange.fr> To: FERNANDO FREDIANI <fernando.frediani@upx.com> Cc: users@ovirt.org Subject: Re: [ovirt-users] Good practices Message-ID: <4365E3F7-4C77-4FF5-8401-1CDA2F0029EE@orange.fr> Content-Type: text/plain; charset=3D"windows-1252"
Moacir: Yes! This is another reason to have separate networks for north/= south and east/west. In that way I can use the standard MTU on the 10Gb NIC= s and jumbo frames on the file/move 40Gb NICs.
Why not Jumbo frame every where ?