Re: DWDM Mux/Demux using 40G Optics

[Colton Conor <colton.conor () gmail com>]

I guess that is the real question. Besides the client ports that are
clearly identified by channel number on Muxes, what channels can the
special ports handle?

http://www.fs.com/products/43723.html It has 4 special service port options:

1. Expansion Port (Based on what I am seeing, I think this would be to
stack another mux if you needed more channels. So I assume it allows all
channels to be added besides the client channels?)
2. Monitor Port (I think this is just a tap that you would hook a monitor
up to, and be able to see all channels coming through with a meter. I
assume not a good idea to add/drop channels through this port)?
3. 1310nm Port (Labeled as 1310, but clearly allows more than just 1310
since tutorial is saying it supports QSFP+ which is 1270 - 1330 nm, so what
range does it really support or is there no a range?)
4. 1550nm Port (Labeled as 1550nm, but I wonder if its like the 1330nm?)


Would you recommend a monitor port on every mux you buy?



On Mon, Jun 19, 2017 at 2:18 PM, Mike Hammett <nanog () ics-il net> wrote:

> Verify pass-through frequencies for the 1310 (or equivalent) for the
> passive mux in question. This would only work for a single channel.
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>
> ------------------------------
> *From: *"Luke Guillory" <lguillory () reservetele com>
> *To: *"Faisal Imtiaz" <faisal () snappytelecom net>, "Colton Conor" <
> colton.conor () gmail com>
> *Cc: *"nanog list" <nanog () nanog org>
> *Sent: *Monday, June 19, 2017 2:13:10 PM
> *Subject: *RE: DWDM Mux/Demux using 40G Optics
>
>
> Faisal,
>
> How would he inject his current 4x10 40g into the mux which is currently
> on a single LC cable?
>
>
>
>
>
> Luke Guillory
> Network Operations Manager
>
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> -----Original Message-----
> From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of Faisal Imtiaz
> Sent: Monday, June 19, 2017 2:02 PM
> To: Colton Conor
> Cc: nanog list
> Subject: Re: DWDM Mux/Demux using 40G Optics
>
> Answers in-line below.
>
>
>
> If you  look at the CWDM Muxes (8 or 9 channel) you will notice a common
> configuration of
>
>     Upgrade Port (expansion port)  + 1450 or 1470 to 1610nm
>
>     in the DWDM muxes you will see  them listed as # of Port + 1310 pass
> thru channel.
>
> These are exactly what you are looking for ..... :)