>>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 Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net > From: "Colton Conor" <colton.co...@gmail.com> > To: "Faisal Imtiaz" <fai...@snappytelecom.net> > Cc: "Mike Hammett" <na...@ics-il.net>, "Luke Guillory" > <lguill...@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 < fai...@snappytelecom.net > > wrote: >> 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: supp...@snappytelecom.net >>> From: "Colton Conor" < colton.co...@gmail.com > >>> To: "Mike Hammett" < na...@ics-il.net > >>> Cc: "Luke Guillory" < lguill...@reservetele.com >, "nanog list" < >>> nanog@nanog.org >, "Faisal Imtiaz" < fai...@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 < na...@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" < lguill...@reservetele.com > >>>> To: "Faisal Imtiaz" < fai...@snappytelecom.net >, "Colton Conor" < >>>> colton.co...@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 >>>> Fax: 985.536.0300 >>>> Email: lguill...@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-boun...@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 ..... :)
