2 Quick Questions on Switches for someone, Please

[pipabix 0]

PC parts bought and put together. all set up, ready to go. I5 4670K

 

kinda narrowed it down to a few cams,

 

but first a switch question.

 

im going to start off with one cam, and if i like it i will buy another and build my way up to 7 or 8.

 

2 questions i have is,

 

I see some switches with 8 ports, but only 4 POE, am i correct in assuming youd need to look after your own power for the 4 ports without POE (to power the cams)

 

and if so, are you better then to go for a switch with all 8 ports POE or go for 8 standard ports and keep power supply to cams seperate (dont think id like to do this though)

 

any recommendations for 8-12 port with all POE switch? .

 

max id have is 10 cams, . . min 6. 1-3mp cams

[pipabix 0]

could this 8 port be what im looking for?

 

http://www.amazon.co.uk/TRENDnet-TPE-T80H-rack-mountable-TPE-T80H-Black/dp/B00I8GVMSM/ref=sr_1_10?ie=UTF8&qid=1404413993&sr=8-10&keywords=8+poe+switch

 

 

 

 

 

could someone explain managed and unmanaged please.

.

[MaxIcon 0]

That one looks ok, with the following considerations:

 

- It's POE+, giving up to 30W per port. This is handy if you use PTZ or heated cams, or anything that uses more than 13W, but it usually costs extra if you don't need it.

 

- Total power budget is 125W, or 15.6W per port average, so they can't all run POE+ at once. This will power pretty much any non-motorized or heated cams. Most modern compact cams only use 6-8W, though there are exceptions.

 

- One of your 8 ports will need to connect to the rest of the network, so you'll only have 7 available for cams.

 

- There's no Gb uplink. This switch should handle 8 3MP cams, which would rarely need more than 8Mbps per cam, for 64Mbps total if you could use all 8. Still, many people like Gb uplinks to avoid any chance of network congestion.

 

Most 10/100 switches with a GB uplink use an extra port or two for the uplink, so you'd be able to use all 8 ports for cams.

 

Managed means it's got an IP address and a user interface. Most managed switches are for corporate style networks, where you can adjust a wide variety of parameters to make it more efficient or keep out unwanted traffic.

 

For cams, the useful thing most managed POE switches do is let you disable and enable ports, so you can power cycle a cam without unplugging the connector or power cycling the switch. You can usually get the power draw for each port as well, which can be handy.

 

I've got a couple of managed switches, but on a simple home network, I don't use much except the features mentioned.

[catseyenu 0]

?

http://www.ebay.com/itm/271533480994?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

[buellwinkle 0]

I would not buy an 8 port 100Mbps switch without a GigE uplink with today's high resolution cameras because it's going to cause problems. Either find one with a gigabit uplink or just get a GigE switch.

 

Managed means you can manage the switch remotely. Say you fly to Brazil to see the World Cup and you have a power brown out and some of your cameras are stuck. With a managed switch you can see the network traffic stats, you can see the PoE power consumption and most importantly, you can toggle power for the port and see if you can bring the camera back online. Managed is what I use everywhere, at home, projects and such. Expect to pay about $100 more for a managed switch, give or take.

 

If you are starting off with 1 camera, here's what I would do. Pickup a cheap PoE injector, I use the wall plug style that is a 1/2 amp or about 25W. When you grow, keep that injector to test cameras, see if there's a bad cable, see if the switch went bad. I use mine more than I want to as I've lost more PoE switches than cameras in the past year.

[catseyenu 0]

A little deep for most beginners but as an example of enterprise quality material that's available...

 

HP ProCurve 2520-24-PoE (J9138A) 24 Port POE switch - 2xGbe + 2SFP US $21.50

 

http://www.ebay.com/itm/191233221679?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

[pipabix 0]

I would not buy an 8 port 100Mbps switch without a GigE uplink with today's high resolution cameras because it's going to cause problems. Either find one with a gigabit uplink or just get a GigE switch.

 

Managed means you can manage the switch remotely. Say you fly to Brazil to see the World Cup and you have a power brown out and some of your cameras are stuck. With a managed switch you can see the network traffic stats, you can see the PoE power consumption and most importantly, you can toggle power for the port and see if you can bring the camera back online. Managed is what I use everywhere, at home, projects and such. Expect to pay about $100 more for a managed switch, give or take.

 

If you are starting off with 1 camera, here's what I would do. Pickup a cheap PoE injector, I use the wall plug style that is a 1/2 amp or about 25W. When you grow, keep that injector to test cameras, see if there's a bad cable, see if the switch went bad. I use mine more than I want to as I've lost more PoE switches than cameras in the past year.

 

something like this perhaps buellwinkle?

 

http://www.aliexpress.com/store/product/48V-0-5A-Power-Adapter-Wall-Plug-PoE-Injector-Free-Shipping/502910_732184560.html

 

just looking at that wall plug, I thought it would say data in+power. . and then the other side data out.?

 

except its data + power out. . .

 

I take it the camera goes to the Data + power out, and the lan cable to the PC goes in the other one?

 

yes, I can see how this little device could be handy, only €9 shipped to Ireland