- What you're looking at here,
is a 100,000 dollars of equipment.
On the Aruba website,
these switches are listed at $25,900.
These switches are listed at $18,400.
I've got two computers, one over here,
one over here,
which I used in this video
to demonstrate 100 Gig Ethernet.
These two computers have 100 Gig Mellanox
interface cards in them.
I was using one of these 8360 switches
to demonstrate 100 Gig Ethernet.
I really wanna thank Aruba for sponsoring this video
and sending me this fantastic equipment.
Without their support I wouldn't be able to demonstrate
what I'm gonna show you in this video.
I'm gonna show you multimode vs single Mode Fiber.
I'm gonna show you a 100 Gig QSFP28
25 Gig
SFP
28.
Show you network cards.
I'll show you a copper SFP versus a fiber SFP.
There's a whole bunch of stuff to cover in this video.
Okay. Let's get started.
(upbeat techno music)
Here as an example is a QSFP 28.
This supports 100 Gig ethernet.
So,
as an example,
I could take this QSFP
28
and put it into a port on the switch,
100 Gig
QSFP.
The interface on this QSFP
is MPO.
That allows me
to use a breakout cable such as this.
So, MPO on the one side, I could connect that to the switch.
But notice here
breakout cable,
this supports
four
25 Gig interfaces.
So on the single cable, it's broken out into four.
You can see the numbers here, so as an example,
I could take cable one
and
take a 25 Gig
SFP 28
and I could plug that into this port on the switch
as an example and take port one.
These have LC connectors.
So I'll take the connectors off
and I can plug that into the switch.
So I have a 100 Gig
QSFP 28
going to
25 gig
SFP 28.
And I've got four of those here,
so what I could do is take another one as an example,
and simply connect that to another switch.
So as an example,
here is my
25 Gig
SFP 28.
Plug that into this switch over here,
take for instance, port three
on this cable
and
LC connector once again,
multimode fiber and connect it to that switch.
So, I could do that for all cables.
So I've got multiple 25 Gig SFP 28 here.
I could connect another cable to this switch
and another cable to this switch
so that I've got 50 Gig uplinks.
So something like this.
Put those two in
disconnect this, this is
two
so put that in there.
And this is
four,
and connect that like that.
So,
100 Gig
single SFP 28,
going to two
25 Gig ports on this switch and this switch
gives me 50 Gig uplinks
to the
core switch.
Now, that's just one example.
I've also got
DAC cable.
So this isn't fiber, this is copper.
Twinax cable, direct attach cable, these are 100 Gig.
So as an example,
I could put that into there and put that into there.
And what I've got now is 100 Gig ethernet.
So 100 Gig ethernet between those two switches.
I'll just move this so that I've got more space.
But as an example,
100 Gig ethernet between those two switches.
I've got a few of these, so as an example, if I wanted to,
I could connect multiple of these to give me, say 200 Gigs.
So put that one in there
and
put that one on there.
So if I bonded those two together,
I could get 200 Gig between these two switches.
50 Gig uplinks between these two switches,
to the switch as an example, 100 Gig between these two.
You may not wanna do that obviously
and that's why I've got another one of these.
So, here's another
100 Gig
MPO cable.
So what you may wanna do as an example,
is connect it to this switch
and then add additional connections to these two switches.
What I've also got here is a 50 Gig DAC cable.
So what I could do as an example
is connect these two switches together using 50 Gig.
So, as an example,
let me pull these out just to make some space here.
So rather than just doing that, I could, as an example,
run 50 Gig directly between the two switches.
I'll remove all of these.
And once again, I could, as an example,
run 50 Gig between these two switches.
So, this is a 50 Gig
DAC cable.
What I demonstrated in my previous video is 100 Gig
on the Mellanox connections on these PCs using DAC cable
to
these 8360s.
So
(metal thumping)
I could run
100 Gig like that.
I could, if I, if I preferred use fiber rather than copper.
So as an example,
put these into these two switches
and then run fiber MPO
connections between these two.
What I've also got here is 25 Gig network cards.
I could put fiber SFP pluses in them as an example.
These are LC connectors once again.
So what I could do, is connect
a port
on
the network card
to the Aruba
SFP
like this.
So, that would give me
25 Gig
from the PC to the switch.
So in the previous video,
I demonstrated 100 Gig using
DAC cables
from my PCs to the 100 Gig ethernet switches,
but that's an example of using fiber.
So these have dual port,
so I could connect both to give me 50 Gig.
But there's an example of 25 Gig.
I also have 10 Gig
copper
SFPs.
So, Aruba switches will allow you to run
non-Aruba
SFPs up to 10 Gig.
So I could put that in as an example on that switch
and this one on this switch
and then I could if I wanted to,
connect a copper
cable,
and connect those two switches together using copper.
But what you could do as an example,
is use a Sonnet converter.
This is 10 Gig,
ethernet,
and this can connect to a USB-C port on a Mac.
So I could connect this to my Mac and I could get 10 Gig
on that port.
And I could do the same here.
Ethernet to another Sonnet converter,
so 10 Gig to another Sonnet converter.
So I could connect two max and I'll demonstrate that
when I'm running 10 Gig,
I perf between two max using the Sonnet connectors.
So, that's copper
10 Gig.
Now, you could also, as an example,
use fiber.
This is once again a none
Aruba
SFP.
So I could connect that in here.
So I've got
fiber LC connectors
rather than copper.
So hopefully as you can see,
SFPs, QSFPs give you a lot of options.
Now here, I've got 48 ethernet ports.
This is copper.
They allow me as an example,
to use
one Gig
such as this.
So you, one Gig,
to USB
or I could use a connector like this
that gives me five Gig.
These ports support one Gig,
2.5 and five Gigabits per seconds.
So I have 48 of those ports.
One of the problems I've been having with the slab is
getting enough end points to be able to send enough traffic
to the network.
I, once again,
have too much bandwidth
for me to be able to use 12 100 Gigabit interfaces
is very difficult in a lab environment
like this or home environment. I need a lot of devices.
There's too much bandwidth here.
But hopefully that gives you an idea
of some of the connections on these switches.
Let's talk now about the difference between
single mode fiber and multimode fiber.
And rather than just talking about this,
I wanna show you practically by sending the light
through the cables and show you the difference
between the cables.
So, these Aqua type cables, this is an LC connector.
This is multimode.
This LC connector cable is single mode.
Notice yellow cable. So single mode versus multimode fiber.
Okay. So in this example,
I've got a visual fault locator.
Fiber doesn't use visual light, so you can't see the light.
So that's why he must never point it at your eye.
But here I'll be able to connect this
to
the fault detector
and I'll be able to
see
the actual light going through the fiber.
So here's multimode fiber and what you'll notice
it isn't just a single beam of light.
Notice the light is bouncing around.
In multimode fiber the core is a lot bigger
than in single mode fiber.
So the light bounces around.
And what you'll notice is if I move this cable,
so I bend the cable, the light moves in the cable.
So notice how it's moving there.
I can adjust the light by just bending the cable slightly.
So slight bend in the cable, light as being moved around
because this is multimode fiber.
The light is bouncing around in the cable.
So any movement there
adjusts the light going through the cable.
So that's multimode.
Single mode.
So I'll connect this
to
the visual light
fault locator.
And what you'll notice there
is the pattern is very different to multimode fiber.
Notice you see a solid light.
And if I move this around
notice it's still a solid light
and what you can actually see, is you can see
the light bleeding through the cable.
So you can see there it's bleeding through the cable.
Now that's obviously something you don't wanna do.
You don't wanna bend the cable
because it'll affect your throughput
and you can break
the
cable.
Once again, it's glass inside so you can break it.
But notice there's light bleeding through the cable
and notice, even though I bend it and I'm bending it a lot,
I still have a single beam of light.
It's not bouncing around in the cable.
The core is a lot thinner in single mode.
Very nice to see it visually I think.
Much easier to understand multimode and single mode
if you simply see it like this.
And again, here's multimode.
Notice you can see
that there are multiple beams of light there.
And if I move it around,
you can see once again, all of them moving around.
Just slight movement there.
And if I bend it quite a lot, you can see it's adjusting.
So slight movement there,
lots of light beams being bounced around.
Whereas with single mode, we don't see that.
So I'll turn it off again and use single mode one last time.
And what you'll notice is a single beam of light.
Move it slightly, still single beam of light.
It's not multiple beams like we saw with multimode.
That hopefully shows you quite clearly the difference
between single mode fiber and multimode fiber.
Here we have a single beam of light
going through the core center
of the fiber cable.
Here we have a bunch of light beams being bounced around the
center of the fiber cable.
So when you buy SFP, so QSFP is as an example,
SFP 56s, you need to make sure
that you're using the right cable for the SFP.
Is it multimode or is it single mode?
Make sure you use the right cable type.
(upbeat techno music)