[c-nsp] WDM (wave division multiplexing) fiber question

[Nick Hilliard]

1310nm dual strands is probably standard LR or LX.  It could be CWDM, but
only if they're being very explicit that the client side presentation is
CWDM.  This would be unusual.

Nick

On 01/10/2015 6:15 p.m., Scott Granados wrote:
> Nick, this is a big help as were all the other responses.
> 
> I’m told it’s 1310 NM, 2 strands.  I did not  get a KM number which I will request.
> 
> Thank you!
> 
>> On Oct 1, 2015, at 1:11 PM, Nick Hilliard <nick at foobar.org> wrote:
>>
>> On 01/10/2015 5:18 p.m., Scott Granados wrote:
>>> One of my upstream carriers is asking me to use WDM optics to attach.
>>> Would this be a different part numbered SFP for the ASR or would a
>>> standard GBIC do the trick?  (I’m assuming no)  What concerns do I have
>>> for ordering SFPs to terminate single mode fiber with WDM on my end?
>>> Anything other than finding the right part number SFP?
>>
>> Your upstream provider should have told you:
>>
>> 1. the dwdm channel number for the transceiver (i.e. the wavelength it
>> transmits on)
>> 2. whether you need a 40km or an 80km transceiver
>>
>> Once you find this out, you'll need to order a dwdm transceiver of that
>> configuration from a third party vendor, coded as a cisco part.
>>
>> Obviously you could get a cisco part, but the list price is about 10-20x
>> what you would expect to pay for a third party unit so unless you like
>> burning money, third party transceivers are a better plan.
>>
>> Also with DWDM, you need to be extremely careful about fiber hygiene.  Any
>> time a cable is inserted, both the ferrules and the sockets need to be
>> swipe-cleaned with the appropriate equipment (cletop-s and LC one-click
>> cleaners)
>>
>> Nick
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> 
>