[195015] in North American Network Operators' Group
Re: DWDM Mux/Demux using 40G Optics
daemon@ATHENA.MIT.EDU (=?UTF-8?Q?Marian_=C4=8Eurkovi=C4=8)
Mon Jun 19 14:51:38 2017
X-Original-To: nanog@nanog.org
From: "=?UTF-8?Q?Marian_=C4=8Eurkovi=C4=8D?=" <md@bts.sk>
To: Colton Conor <colton.conor@gmail.com>,NANOG <nanog@nanog.org>
Date: Mon, 19 Jun 2017 20:51:35 +0200
In-Reply-To: <CAMDdSzM=ZUL0m4iJnqd1Js8dQsouTUN4=Trk0ckD=JxubUh50Q@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org
On Mon, 19 Jun 2017 13:26:55 -0500, Colton Conor wrote
[snip]
> Maybe I should just ditch the 40G QSFP+ optics and use all 10G optics,
> but the switches I am using have 48 10G SFP+ ports and 6 QSFP+ ports
> built in. I know there are 40G breakout cables, but the whole point of
> 40G is to aggregate VLAN/circuits.
Depending on switch vendor, it might be possible to create real 40GE interface
also from 4 consecutive 10G SFP+ ports. Then you can use standard 10G CWDM/DWDM
SFP+ optics and still benefit from wire-speed 40G uplinks.
Note that this is *not* etherchannel/LAG, but true HW-based 40GE mode.
M.
