Are PoE+ switches any good?

[riahc3]

Im looking for a PoE+ switch to power four PoE IP cameras and I think it would work great but I just wanted to know the opinion of people that have had experience with PoE/PoE+ switches if they work good give enough power to devices.

Thank you

 

[imagoon]

Yes, as long as the devices are PoE they work fine. Not sure what you are asking. The only thing to watch for is the load limit on the switch. If all the devices will exceed the load limit on the switch then not all devices will power on.

 

[riahc3]

Yes, as long as the devices are PoE they work fine. Not sure what you are asking. The only thing to watch for is the load limit on the switch. If all the devices will exceed the load limit on the switch then not all devices will power on.

What Im asking is that if current PoE/PoE+ switches are any good because before the standard came out, they were very picky.

Also, I have noticed that even though some give out 30W on each port for a total of 400W (pulling numbers outs), when 1 PoE+ device is plugged in, that port gives out 30W, when 2, each of those ports give out 30W, but when you start plugging 3, they fall back to 10W per port even if all ports are PoE+. Saw that on a D-Link.

For starters, Im looking at 4 nonmotorized PoE cameras so....I think a 100W+ PoE+ switch is enough. Kind of lost on which to get though.

Ive eyed:

ZyXEL GS1900-24HP
Netgear GS510TP (this was beautiful and near perfect but it has no IPv6 support. I don't need it but spending this much money on a product that already is out of date feels wrong)
D-Link DGS-1210-10P (this is the only that "falls back" but in part due to only giving 78W)

 

[imagoon]

What Im asking is that if current PoE/PoE+ switches are any good because before the standard came out, they were very picky.

Also, I have noticed that even though some give out 30W on each port for a total of 400W (pulling numbers outs), when 1 PoE+ device is plugged in, that port gives out 30W, when 2, each of those ports give out 30W, but when you start plugging 3, they fall back to 10W per port even if all ports are PoE+. Saw that on a D-Link.

For starters, Im looking at 4 nonmotorized PoE cameras so....I think a 100W+ PoE+ switch is enough. Kind of lost on which to get though.

Ive eyed:

ZyXEL GS1900-24HP
Netgear GS510TP (this was beautiful and near perfect but it has no IPv6 support. I don't need it but spending this much money on a product that already is out of date feels wrong)
D-Link DGS-1210-10P (this is the only that "falls back" but in part due to only giving 78W)

Anything that follows the standards tend to work now. 802.3af nearly 100% and 802.3al "mostly." The issue on that Dlink is that it has a max PoE Power Budget (look for this on all switches that are PoE) of 78Watts max. So yes 2 ports at 30W will work and the 3rd port requesting 30w would be denied since 90w > 78w. That netgear power budget is 130w so all 4 could run at 30w.

Are you sure that your cameras are 30w budget? I find most nonmotorized ones a lot lower than that.

 

[riahc3]

Anything that follows the standards tend to work now. 802.3af nearly 100% and 802.3al "mostly." The issue on that Dlink is that it has a max PoE Power Budget (look for this on all switches that are PoE) of 78Watts max. So yes 2 ports at 30W will work and the 3rd port requesting 30w would be denied since 90w > 78w. That netgear power budget is 130w so all 4 could run at 30w.

Are you sure that your cameras are 30w budget? I find most nonmotorized ones a lot lower than that.

None of the cameras do 30w, they don't even reach 1/8 of that; The reason is that in the future we will probably use PTZ (motorized) cameras and those do reach 30w.

 

[mammador]

er....why shouldn't they be?

PoE switches are common for large enterprises...makes sense if a large network has a lot of IP phones, security systems, etc. on various VLANs that don't need mains electricity. it's an old standard anyhow, probably been around ten years now it's out...

For network cameras though, I'd say a more important issue is if it can store footage locally on the camera and has a battery, in case your network goes down or the PoE layer 2 device isn't working.

 

[riahc3]

er....why shouldn't they be?

What why shouldn't? Didn't understand.

PoE switches are common for large enterprises...makes sense if a large network has a lot of IP phones, security systems, etc. on various VLANs that don't need mains electricity. it's an old standard anyhow, probably been around ten years now it's out...

The official standard hit in 2003.

For network cameras though, I'd say a more important issue is if it can store footage locally on the camera and has a battery, in case your network goes down or the PoE layer 2 device isn't working.

We don't mind about not having those features; This isn't a huge company/building.

 

[imagoon]

None of the cameras do 30w, they don't even reach 1/8 of that; The reason is that in the future we will probably use PTZ (motorized) cameras and those do reach 30w.

In that case it is pretty simple. Don't exceed the power budget and you should be fine. Remember there is losses in the cable also so you may have issues if you get it "too close." IE 2 30watt cameras on a budget of 62watts may not work correctly if more than 2 watts is being lost in the cable.

 

[RadiclDreamer]

I've never had an issue with POE, as long as you stick with good gear and dont overload the power budget you are going to be more than fine.

 

[alkemyst]

Anything from the last couple years and a reputable manufacturer should be just as good as any non-POE switch. There should not be any bugs since the standard is over 10 years old now. Some POE devices don't play properly, but that is not the fault of the switch.