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

[Nick Hilliard]

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