I just want to drill down, for the sake of an in-depth conversation, not just
for you but for others who are lurking as well...
see my answers inline below:-
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
----- Original Message -----
> From: "Paul Stewart" <p...@paulstewart.org>
> To: af@afmug.com
> Sent: Sunday, August 14, 2016 12:32:57 PM
> Subject: Re: [AFMUG] DWDM Gear
> Thanks for that....
>
> We want something managed and can be monitored ...
There is no difference, or anything lost, in this arena, between an 'Active
Solution' vs a "designed/yourself passive" solution.
> modular in nature if possible.
There is no "Canned solution" that can beat the a 'designed passive solution'
in this area.
> Thinking active as the "endpoints" (routers and/or switches) we do not want
> to utilize colored optics nor can we support it in some situations ...
> so MUX for sure.
>
I think you are mis-understand how this actually works/gets implemented...
All CWDM/DWDM solutions have a passive fiber Mux/Demux in the box, the only
difference is what you see (out side the box) as optic options.
e.g. each side just looks like this...... (passive mux/demux)---> {(Colored
optics <--> SMF Optics)in a managed Media Converter}
(One can use a managed modular media converter or a managed switch for
this).
> While we operate a WISP, this is part of our core network in one city between
> two data centers so we want high quality
There is nothing 'lost' or 'gained' in this area, only the perception of what
is under the hood.
> with a lower than we're used to price tag :) We would start with 40x10G
> likely and see how it goes
Be prepaid for some serious pain to the wallet for lots of marketing BS to
justify that from those selling canned solutions.
Also pay attention to the Cost and power range of the required optics, (do you
power budget calcs due to insertion loss)
My suggestion would be as follows:-
For a moment, forget about which solution you are going to buy, take a bit of
time to 'engineer' a passive solution, and just pencil in the figures, for all
the components...
Use this as a baseline to value the solution you are actually looking to buy,
or negotiate for...
(when I do such an exercise, 40c DWDM mux/demux units are running less than $2k
each, low insertion loss units(3-4.5db), 100mhz channels, Colored optics (15db
margin) are under $300 each. You can add 10g SFP+/SFP+ media converter for each
side ($900each) or you can add your favorite brand of 10g 48 port switches to
each side ...(running anything between $1000 to $1500 on the 2ndary markets).
This would help in establish the value proposition and make you comfortable
with what you end up going with.
>
>
> Thanks!
> Paul
>
>
> -----Original Message-----
> From: Af [mailto:af-boun...@afmug.com] On Behalf Of Faisal Imtiaz
> Sent: August 14, 2016 11:16 AM
> To: af@afmug.com
> Subject: Re: [AFMUG] DWDM Gear
>
> Technically speaking, there is no magic to CWDM or DWDM solution....
> You can go with a 'canned' solution from folks such as Ciena/Cisco/etc etc etc
> or you can create your own with the required pieces, in the simplest form all
> one needs is couple of passive Mux/Demux units, colored optics and a
> Switch/Media Converters (ones that you can read the light levels from).
>
> Depending on length of the fiber, you may or may not need anything more (such
> as
> regen units, amps etc). If you are going to design a solution using passive
> Mux/Demux do pay attention to the insertion loss figures on the different
> products.
>
> In my opinion, doing a CWDM/DWDM design calculations for a WiSP should be
> fairly
> easy to understand.
>
> The benefit in designing your own solution, you gain a much better
> understanding
> on what you can do and what you cannot do... (e.g. do you know that you can
> potentially stack a DWDM solution right behind a CWDM passive mux ? .... and
> you will end up with a much more flexible solution, at a fraction of the cost
> of a comparable canned solution.
>
> We did a CWDM (8ch) passive solution, along with colored optics, 10g Switches
> between 4 different Data Center, for under $12k a couple of years back.
> They way we optimized our design for initial cost, while maintaining the
> ability
> to expand my adding another CWDM or DWDM mux in the future.
>
> (We went with gear from Fiberstore, we did consult them with our solution, and
> they offered us Mux/DeMux units with even lower insertion loss that those
> listed on their website for a slight premium, which in our case was well worth
> it)
>
>
> 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
>
> ----- Original Message -----
>> From: "Justin Wilson" <li...@mtin.net>
>> To: af@afmug.com
>> Sent: Sunday, August 14, 2016 10:52:02 AM
>> Subject: Re: [AFMUG] DWDM Gear
>
>> Are you looking for active or passive?
>>
>> We just replaced a failing Ciena Mux with an 18 channel passive mux
>> for a data center client. Ours was CWDM, but they make a DWDM
>> version. Total cost was under 5 grand, including spares. Ciena
>> wanted 24k to update the service contract, update software, and troubleshoot
>> an
>> alarm state.
>>
>> Justin Wilson
>> j...@mtin.net
>>
>> ---
>> http://www.mtin.net Owner/CEO
>> xISP Solutions- Consulting – Data Centers - Bandwidth
>>
>> http://www.midwest-ix.com COO/Chairman Internet Exchange - Peering -
>> Distributed Fabric
>>
>>> On Aug 14, 2016, at 10:41 AM, Chuck McCown <ch...@wbmfg.com> wrote:
>>>
>>> I have always used Cyan.
>>>
>>> -----Original Message----- From: Paul Stewart
>>> Sent: Sunday, August 14, 2016 7:30 AM
>>> To: Animal Farm
>>> Subject: [AFMUG] DWDM Gear
>>>
>>> For those folks doing DWDM on fiber, whats your preferred equipment and why?
>>>
>>> We currently use BTI equipment which works extremely well but it’s
>>> priced in the same ballpark as Ciena, Nortel, Cisco etc … quite
>>> expensive to deploy. Hoping to find something more economical but
>>> just as reliable? By reliable I mean that it’s deployed for years
>>> without having to do anything service impacting to it. For this particular
>>> deployment I’m thinking of, ROADM isn’t important
>>> neither. Prefer active solution vs passive. CWDM would even be ok at this
>>> point to consider …
>>>
>>> Basically looking at ways to cut down on 10G fibers between two
>>> physical locations (the fiber is leased)
>>>
>>> thanks,
> >> Paul
