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How do I connect two switches using SFP ports?

7K views 10 replies 6 participants last post by  Mega Man 
#1 ·
Looking to purchase two of these:
https://www.amazon.com/dp/B01AIG5FO6/_encoding=UTF8?coliid=I1FKKGWYT9NBAQ&colid=1AQIZA8EMIMBQ

If I want to connect them together, I was thinking I use the SFP ports.

What exactly do I need to connect them together?
I think I need a fiber cable but do I also need a module or something?


I am connecting multiple POE cameras and I could not find a silent (fanless) switch with 16 ports with at least 8 POE ports that is a managed or smart switch.
So I am figured I would just connect two 8 POE port switches together...
I am new to this so any help is appreciated.
 
#2 ·
Quote:
Originally Posted by dseg View Post

Looking to purchase two of these:
https://www.amazon.com/dp/B01AIG5FO6/_encoding=UTF8?coliid=I1FKKGWYT9NBAQ&colid=1AQIZA8EMIMBQ

If I want to connect them together, I was thinking I use the SFP ports.

What exactly do I need to connect them together?
I think I need a fiber cable but do I also need a module or something?


I am connecting multiple POE cameras and I could not find a silent (fanless) switch with 16 ports with at least 8 POE ports that is a managed or smart switch.
So I am figured I would just connect two 8 POE port switches together...
I am new to this so any help is appreciated.
The way I know is to connect both SFP together, then set the interface to 1q trunk them, that's it.

BTW, that says fiber uplink, i'm assuming it's strictly for use between your fiber router to your switch. Looks unmanaged, i dunno, dumbswitching is pretty dumb, thus the name, might work, might not, who knows.

I'm pretty sure if you connect both switch via SFP, i'll allow talk between through SFP's, what you DONT want to do, is loop them... lol.
 
#3 ·
Quote:
Originally Posted by emeianoite View Post

The way I know is to connect both SFP together, then set the interface to 1q trunk them, that's it.

BTW, that says fiber uplink, i'm assuming it's strictly for use between your fiber router to your switch. Looks unmanaged, i dunno, dumbswitching is pretty dumb, thus the name, might work, might not, who knows.

I'm pretty sure if you connect both switch via SFP, i'll allow talk between through SFP's, what you DONT want to do, is loop them... lol.
Is it best to have the SFP ports connect the switches, then SFP port to my Asus router ethernet?
Do you know exactly what else I would need to buy in addition to these two switches?
 
#4 ·
Same price as using two of the ones you linked on Amazon, with a much better switch hardware and management as well as all 16 ports in a single chassis:
https://store.ubnt.com/collections/routing-switching/products/unifi-switch-16-150w
Edit: just saw you wanted a fanless one. That is hard to find because you need a way to dissipate all the heat that is running through the poe ports. That is why you typically see fans on these poe models.

If you go with those two Zyxel ones, I would just connect both of them over Ethernet to your router. And hook up half your cameras to each switch. That will give you less packet collision than having the switches connected to each other and then one of them connected to the router.

Are you planning on recording what the cameras see? And if so, is it a computer to made or some NVR?
 
#6 ·
Also that port is usually piggy backed off of one out the other ports (essentially you would only be able to use 7 ports on each for a total of 14, but i could be wrong)

That said they make poe injectors.
 
#9 ·
Quote:
Originally Posted by lisachang001 View Post

Quote:
Originally Posted by Mega Man View Post

Also that port is usually piggy backed off of one out the other ports (essentially you would only be able to use 7 ports on each for a total of 14, but i could be wrong)

That said they make poe injectors.
I am i bit confused. can you please make a detailed explain ?
I am sorry i missed this

https://www.google.com/search?ie=UTF-8&client=ms-android-hms-tmobile-us&source=android-browser&q=poe+injector

You plug in a network cable, the injector adds (injects) power and turns it into a poe network cable.
 
#10 ·
Quote:
Originally Posted by lisachang001 View Post

I am i bit confused. can you please make a detailed explain ?
In swqitches with 8 RJ45 Ethernet and 1-2 SFP Ethernet, most of the time those 1-2 SFP ports share the same port as the RJ45. So for example with 8 RJ45's and 2 SFP, ports 7 and 8 would be mirrored to both the RJ45 and SFP ports, and you can only use one of those at a time. So either 6 RJ45 with 2 SFP, 7 RJ45 with 1 SFP, or 8 RJ45. Rarely is it 8+2 configuration, though those do exist of course. All cheaper models tend to be mirrored ports though.

As for poe injectors, it is just a power supply box you run your Ethernet cable through that injects voltage onto the correct pins to make the cable have poe power on it from a non-poe switch. You need an injector for each cable though, which gets messy and needs a lot of power plugs.
 
#11 ·
Not always they make multi port injectors
 
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