Re: DWDM Mux/Demux using 40G Optics

[Youssef Bengelloun-Zahr <bengelly () gmail com>]

Hi,

Ex CubeOptics (now Huber Schuner) are just great. Been using them for years, rock solid. I highly recommend them.

Best regards.



> Le 26 juil. 2017 à 04:28, Colton Conor <colton.conor () gmail com> a écrit :
>
> Besides FS.com and http://www.beetlefiberoptics.com, do you have any more
> recommendations for passive muxes? I usually stick to and like FiberStore,
> but I am wondering if there is anything out there better/cheaper.
>
> One of the things I am noticing is the CWDM and DWDM SFP+ optics are quite
> expensive at  $250 for CWDM and $350 for DWDM. I guess it shouldn't be
> cheap to send 10G around a ring, but I am wondering what transponders cost.
>
> On Tue, Jun 20, 2017 at 3:55 AM, Jeroen Wunnink <Jeroen.Wunnink () gtt net>
> wrote:
>
> > Another alternative is to ask the http://www.beetlefiberoptics.com guys.
> > They build muxes on spec and they can also provide a 1310nm wide-band port
> > on their units which allows a 40/100G-LR4 aside from the 1550nm DWDM band.
> >
> > We’ve used some simple splitters (line/1310nm LR4/1550nm DWDM ports on a
> > unit) and full passive DWDM muxes with a 40/100G-LR4 port on there and
> > these work pretty good.
> >
> >
> >
> >
> > Jeroen Wunnink
> > IP Engineering manager
> > office: +31.208.200.622 ext. 1011
> > Amsterdam Office
> > www.gtt.net <http://www.gtt.net/>
> >
> >
> >
> >
> > On 20/06/2017, 01:14, "NANOG on behalf of Colton Conor" <
> > nanog-bounces () nanog org on behalf of colton.conor () gmail com> wrote:
> >
> >    Do you have any idea if fiberstore has one with both a monitor and 1310
> >    wideband port? I would want both.
> >
> >    Seeing as how they don't charge extra for an expansion port, but do for
> >    other special ports I am thinking of just using the expansion port.
> >
> >    On Mon, Jun 19, 2017 at 4:52 PM, Faisal Imtiaz <
> > faisal () snappytelecom net>
> >    wrote:
> >
> > > > > From the sounds of it, no one knows the real difference between the
> > > expansion port, 1310 port, and 1550 port
> > >
> > > Hmm.. not sure how you are reading this...
> > > I believe that there is no 'standard' and as such the actual filter
> > on the
> > > mux/demux you are using may vary by mfg.
> > > I can confirm what is an expansion port... (pass everything thru
> > that is
> > > not being filtered by the mux/demux )
> > > I can also confirm that Fiberstore 1310nm port (not to be confused
> > with
> > > the CWDM 1310 port) will pass all 4 wavelengths for 40g/100g optics.
> > > I don't have experience with the 1550nm port.
> > >
> > > > > For real world applications, I would assume the monitor port would
> > be to
> > > plug in a handheld meter, and see which channels are coming through
> > that
> > > node without breaking the ring.
> > >
> > > Correct that is what it is designed for..... it allows a fraction of
> > > light (I am guessing would also cause an increase in insertion loss
> > > figure).
> > >
> > > > > Not sure if their would be a monitor port for both directions is
> > you
> > > were using a OADM?
> > > If you look at the OADM's e.g. like a Cisco CWDM OADM with monitor
> > ports,
> > > you will see that they are on both sides east & west.
> > >
> > >
> > > Regards.
> > >
> > >
> > > Faisal Imtiaz
> > > Snappy Internet & Telecom
> > > 7266 SW 48 Street
> > > Miami, FL 33155
> > > Tel: 305 663 5518 x 232 <(305)%20663-5518>
> > >
> > > Help-desk: (305)663-5518 <(305)%20663-5518> Option 2 or Email:
> > > Support () Snappytelecom net
> > >
> > > ------------------------------
> > >
> > > *From: *"Colton Conor" <colton.conor () gmail com>
> > > *To: *"Faisal Imtiaz" <faisal () snappytelecom net>
> > > *Cc: *"Mike Hammett" <nanog () ics-il net>, "Luke Guillory" <
> > > lguillory () reservetele com>, "nanog list" <nanog () nanog org>
> > > *Sent: *Monday, June 19, 2017 4:14:19 PM
> > >
> > > *Subject: *Re: DWDM Mux/Demux using 40G Optics
> > >
> > > Thanks for the answers. From the sounds of it, no one knows the real
> > > difference between the expansion port, 1310 port, and 1550 port. For
> > real
> > > world applications, I would assume the monitor port would be to plug
> > in a
> > > handheld meter, and see which channels are coming through that node
> > without
> > > breaking the ring. Not sure if their would be a monitor port for both
> > > directions is you were using a OADM?
> > >
> > > On Mon, Jun 19, 2017 at 2:38 PM, Faisal Imtiaz <
> > faisal () snappytelecom net>
> > > wrote:
> > >
> > > > Answers in-line ...
> > > >
> > > > Faisal Imtiaz
> > > > Snappy Internet & Telecom
> > > > 7266 SW 48 Street
> > > > Miami, FL 33155
> > > > Tel: 305 663 5518 x 232 <(305)%20663-5518>
> > > >
> > > > Help-desk: (305)663-5518 <(305)%20663-5518> Option 2 or Email:
> > > > Support () Snappytelecom net
> > > > ------------------------------
> > > >
> > > > *From: *"Colton Conor" <colton.conor () gmail com>
> > > > *To: *"Mike Hammett" <nanog () ics-il net>
> > > > *Cc: *"Luke Guillory" <lguillory () reservetele com>, "nanog list" <
> > > > nanog () nanog org>, "Faisal Imtiaz" <faisal () snappytelecom net>
> > > > *Sent: *Monday, June 19, 2017 3:30:37 PM
> > > > *Subject: *Re: DWDM Mux/Demux using 40G Optics
> > > >
> > > > 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?)
> > > >
> > > >
> > > > Exactly... this is basically a  pass thru port, i.e. what is not
> > getting
> > > > mux/demux should get passed thru (keep the insertion loss in mind).
> > > >
> > > > 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)?
> > > >
> > > > I don't use this port, but supposedly it will pass a fraction 5%
> > of the
> > > > light from the main port so that it can be monitored. May be
> > someone else
> > > > can offer some practical use for 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?)
> > > >
> > > > Not sure about the range question, but this is the port for having
> > the
> > > > 40g/100g QSFP+ pass thru
> > > >
> > > > 4. 1550nm Port (Labeled as 1550nm, but I wonder if its like the
> > 1330nm?)
> > > > I have not had the need to explore this in detail, but from my
> > initial
> > > > understanding, this can be used for ZR (long range optics) and or
> > to stack
> > > > a DWDM Mux
> > > >
> > > > Would you recommend a monitor port on every mux you buy?
> > > >
> > > > As I shared above, I don't.
> > > >
> > > >
> > > > 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
> > > > >
> > > > > Tel:    985.536.1212 <(985)%20536-1212>
> > > > > Fax:    985.536.0300 <(985)%20536-0300>
> > > > > Email:  lguillory () reservetele com
> > > > >
> > > > > Reserve Telecommunications
> > > > > 100 RTC Dr
> > > > > Reserve, LA 70084
> > > > >
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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 ..... :)