DWDM Mux/Demux using 40G Optics
Faisal Imtiaz
faisal at snappytelecom.net
Mon Jun 19 19:38:50 UTC 2017
Answers in-line ...
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
Help-desk: (305)663-5518 Option 2 or Email: Support at Snappytelecom.net
> From: "Colton Conor" <colton.conor at gmail.com>
> To: "Mike Hammett" <nanog at ics-il.net>
> Cc: "Luke Guillory" <lguillory at reservetele.com>, "nanog list" <nanog at nanog.org>,
> "Faisal Imtiaz" <faisal at 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 at 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 at reservetele.com >
>> To: "Faisal Imtiaz" < faisal at snappytelecom.net >, "Colton Conor" <
>> colton.conor at gmail.com >
>> Cc: "nanog list" < nanog at 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
>> Fax: 985.536.0300
>> Email: lguillory at reservetele.com
>> Reserve Telecommunications
>> 100 RTC Dr
>> Reserve, LA 70084
>> _________________________________________________________________________________________________
>> Disclaimer:
>> The information transmitted, including attachments, is intended only for the
>> person(s) or entity to which it is addressed and may contain confidential
>> and/or privileged material which should not disseminate, distribute or be
>> copied. Please notify Luke Guillory immediately by e-mail if you have received
>> this e-mail by mistake and delete this e-mail from your system. E-mail
>> transmission cannot be guaranteed to be secure or error-free as information
>> could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or
>> contain viruses. Luke Guillory therefore does not accept liability for any
>> errors or omissions in the contents of this message, which arise as a result of
>> e-mail transmission. .
>> -----Original Message-----
>> From: NANOG [mailto: nanog-bounces at 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 ..... :)
More information about the NANOG
mailing list