pcunite
Getting the hang of it
- Jan 28, 2018
- 84
- 25
MikroTik has released their CRS112-8P-4S-IN PoE switch.
Uses MikroTik's RouterOS, which includes many configuration options. The device is set up as a switch, with 192.168.88.1 as the management IP of the bridge interface, so may be used without configuration?
@giomania
Is there a PoE switch which doesn't rely on a power supply and can simply be powered off another PoE switch, provided sufficient wattage is available? Would probably serve as a great fail-safe measure if included power supply ever looses function.
@giomania
Is there a PoE switch which doesn't rely on a power supply and can simply be powered off another PoE switch, provided sufficient wattage is available? Would probably serve as a great fail-safe measure if included power supply ever looses function.
I never saw one in my research.
They usually appear as PoE-powered switches, but can easily exceed anyone's budget
Needs to be usually connected from a PoE at-compliant switch to the uplink of the PoE-powered switch
I realized I have the below on my list as an "injector", and it is really a switch, right? It is a PoE switch which doesn't rely on a power supply and can simply be powered off another PoE switch. Specifically, it requires power from an 802.11at PoE+ switch, and provides 802.11af PoE power to up to four cameras.
https://www.amazon.com/gp/product/B0198H6EUK?tag=ipctk-20
Does this one, US-8,do what you wish? POE powered with 1 poe port.
Ubiquiti Networks - UniFi® Switch 8
Hi. Quick question.
If I buy an unmanaged POE switch like the:
NETGEAR 8-Port Gigabit Unmanaged Switch, PoE/PoE+ 120W, Fanless, Rackmount, Plug-and-Play, ProSAFE Lifetime Protection (GS108PP)
It only has POE ports. Does that mean that 1 POE port gets used up for connection to my router or to another switch?
Is it "OK" to connect a non POE powered device like another router or switch to the POE port of another switch?
Thanks.
R.
That’s correct, one port will need to lead to your router/switch. Each port is capable of either POE or non-POE. Whichever you plug in is how it will respond.
As most have said in earlier posts, buy a switch with the future in mind. I went with an 8 port and I’m already out of ports looking to expand.
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Provided the router and switch are on the same network subnet, you can go from switch to router to PC.The Ethernet cable from the switch, can go to the router and from there to the PC, or has to go directly to the PC?
Glad I got them at $122!!! Yep the Amazon price is now $399. I was thinking that might have been a mistake.
The Amazon price is back to $196.01 debating on this switch but curious as to how loud it actually is.
Don't get me wrong, the V7 MPEG24 is fine for fixed focus and low end PTZ's. I have 7 camera's on it now, including the 49225. It works as advertised, but if you add something like a 59225 you may have a power issue. The power requirement of the 59225 is 23w with IR on, and for the PTZ1A225U-IRA-N it is 22w. Yet the 59225 comes with a 3 amp power brick and the PTZ1A225U-IRA-N includes a 4 amp power brick. I find that odd.So the price was too good to be true after all. I will have to add these caveats to the list.
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I believe the V7 Switch specs may be overrated. I connected the camera to my old TP-LINK POE+ switch and the camera has no problem. While connected to the V7, it was only drawing about 17000mw with no IR on yet. Well below the AT spec. And yes, I did make sure the max power for the port was enabled at 30000mw. The switch does not allow anything higher.So either the switch or the camera are exceeding the 802.3at POE+ maximum port 25.5W power specification?
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It's pretty loud, even though it's in a well ventilated attic I can still hear the fan through the door! Also, just got a new PTZ with a power requirement of 22w with IR on, and this switch does not seem capable. Camera would constantly reboot. Even though I got mine also at $122 via Amazon, it's only good for cams with a low power requirement. Or any of the PTZ's with a lower power requirement. The 49225 I had on it, had no power issues.