@Pete-S said in Fiber SFP Modules:

@dafyre said in Fiber SFP Modules:

@Pete-S said in Fiber SFP Modules:

CWDM are using several different light wavelengths at the same time to get higher throughput. Basically like having several different fiber transmissions going on in the same fiber at the same time.

It's not really needed anymore for 1 or 10 Gigabit.

There are two types of fiber - multi-mode fiber (MMF) and single-mode fiber (SMF). Single mode fiber is the better one and the one you should install today.

With single mode fiber you can transfer 10 Gigabit just using two 10GBASE-LR SFP+ modules for a distance of up to 10 kilometers, 6 miles. The same fiber can also be used for gigabit as well as faster rates like 100 Gigabit.

I had no idea you could get 10 Gig that far on Single Mode.

Do you know what the distances are for Multimode?

I think it depends on the fiber and transceivers used and the speed but from 100ft to 1000ft.

Multimode used to be what everybody was installing but haven't seen it used in anything new the last 5 years or so. I'm not familiar with prices but they tell me that the price of the complete installation with either fiber type will be virtually the same.

I use muiltimode for in-building connections. cheap and easy and available up to 10Gbps.

For inter-building connections on a larger campus, I would recommend single mode.

@nerdydad said in What do you utilize your COLO for? What defined a use for your environment?:

@scottalanmiller Each rack is locked up and only the tenant and the owner can enter the rack.

Still, you can get at them. It's silly and risky. What's the upside to doing your own bench work, off site. Over having bench professionals who are on site and ready to handle things immediately?

And you are asking third party people to deal with the security of other third party people. It's just a lot of risk, but what is the benefit?

@tx1tguy said in Cheap SSL vs Other SSL?:

Holy crap.. This is awesome. Thank you so much. Only thing that suck is the 90 day reissue, but who cares! Its free!

Cloudflare has multi year free certs if you're concerned about that.