Hi-Rise Building Fiber Suggestions

Sun Mar 8 15:41:29 UTC 2020

> Warren Kumari
> Sent: Wednesday, February 26, 2020 4:31 PM
> 
> On Wed, Feb 26, 2020 at 11:20 AM Coy Hile <coy.hile at coyhile.com> wrote:
> >
> > On 2020-02-26 11:14, Randy Bush wrote:
> > >> We use plenty of multi-mode, but only in the data centre, between
> > >> our own kit, for racks within the same cage.
> > >
> > > so you have to stock both single and multi?  hmmm
> > >
> > > randy
> >
> > I'd expect that from the ToR -> Servers would be MMF, but that other
> > infrastructure cabling would be SMF.
> > Even using aftermarket optics, putting single-mode transceivers in
> > every server and access port would quickly become cost-prohibitive,
> > would it not?
> 
> Cisco GLC-SX-MM Compatible 1000BASE-SX SFP 850nm 550m DOM
> Transceiver Module - $6.00 - https://www.fs.com/products/11774.html
> Cisco SFP-GE-L Compatible 1000BASE-LX/LH SFP 1310nm 10km DOM
> Transceiver Module - $7.00 - https://www.fs.com/products/12622.html
> 
> Yup, it is $1.00 more for SM, and you need 2 per link, but unless you are doing
> *lots* that's likely not cost-prohibitive. The delta on 10G is a bit more ($21 vs
> $18), but still not crazy-pants territory...
> 
Unfortunately I'm currently stuck with 40G breakout into 10G towards the floor switches, which is $39 vs $299 -hence my question regarding SMF vs MMF MPO/MTP for the risers. 
Alternatively killing a 40G port with single 10G.

adam