nanog mailing list archives
Re: DWDM Mux/Demux using 40G Optics
From: Youssef Bengelloun-Zahr <bengelly () gmail com>
Date: Wed, 26 Jul 2017 07:48:59 +0200
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 theexpansion 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 filteron themux/demux you are using may vary by mfg. I can confirm what is an expansion port... (pass everything thruthat isnot being filtered by the mux/demux ) I can also confirm that Fiberstore 1310nm port (not to be confusedwiththe 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 wouldbe toplug in a handheld meter, and see which channels are coming throughthatnode 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 isyouwere using a OADM? If you look at the OADM's e.g. like a Cisco CWDM OADM with monitorports,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. Forrealworld applications, I would assume the monitor port would be to plugin ahandheld meter, and see which channels are coming through that nodewithoutbreaking 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 betostack another mux if you needed more channels. So I assume itallows allchannels to be added besides the client channels?) Exactly... this is basically a pass thru port, i.e. what is notgettingmux/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 amonitorup to, and be able to see all channels coming through with a meter.Iassume 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 thelight from the main port so that it can be monitored. May besomeone elsecan offer some practical use for this port. 3. 1310nm Port (Labeled as 1310, but clearly allows more than just1310since tutorial is saying it supports QSFP+ which is 1270 - 1330 nm,so whatrange does it really support or is there no a range?) Not sure about the range question, but this is the port for havingthe40g/100g QSFP+ pass thru 4. 1550nm Port (Labeled as 1550nm, but I wonder if its like the1330nm?)I have not had the need to explore this in detail, but from myinitialunderstanding, this can be used for ZR (long range optics) and orto stacka 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) forthepassive 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 iscurrentlyon 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 ____________________________________________________________ _____________________________________ Disclaimer: The information transmitted, including attachments, is intendedonly forthe person(s) or entity to which it is addressed and may contain confidential and/or privileged material which should notdisseminate,distribute or be copied. Please notify Luke Guillory immediatelyby e-mailif you have received this e-mail by mistake and delete this e-mailfromyour system. E-mail transmission cannot be guaranteed to be secureorerror-free as information could be intercepted, corrupted, lost,destroyed,arrive late or incomplete, or contain viruses. Luke Guillorytherefore doesnot accept liability for any errors or omissions in the contentsof thismessage, which arise as a result of e-mail transmission. . -----Original Message----- From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of FaisalImtiazSent: 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 acommonconfiguration of Upgrade Port (expansion port) + 1450 or 1470 to 1610nm in the DWDM muxes you will see them listed as # of Port +1310 passthru channel. These are exactly what you are looking for ..... :)
Current thread:
- Re: DWDM Mux/Demux using 40G Optics Colton Conor (Jul 25)
- Re: DWDM Mux/Demux using 40G Optics Youssef Bengelloun-Zahr (Jul 25)