Daisy Chain POE Switches?

[Edsison]

How many switches can I daisy chain.
I am using POE switches (16 port) to connect to IP cameras 5 mega pixel cameras.
I need to span a distance of 1000 ft. from the server

 

[Hamperking68]

1000Ft?

That's one hell of a distance.

Where are the Switches Receiving Power from?

 

[Edsison]

1000Ft?

That's one hell of a distance.

Where are the Switches Receiving Power from?

 

[Edsison]

There are three buildings. Small School, each building is approximately 220.ft long. there would be a 16 port POE switch in each building. each switch would utilize an uplink and downlink port to daisy chain the switches the remaining POE ports are dedicated to connections to IP cameras.
there is a video server that is the headend for this video LAN.

 

[Hamperking68]

You should be okay.

Just be careful when doing it I wouldn't go anymore than 5 switches.

 

[bill001g]

I have not seen a actual limit stated but there likely is some technical reason. As long as each run is less than 300 meters it should work.

I suspect the actual limit is the bandwidth With your application the cable between the first and second switch will carry all the traffic for any switch beyond. If you are running high frame rate at a high resolution a 5mpixel camera can put out a lot of bandwidth. If they are like many security cameras I have seen they put out multiple streams at different resolution at the same time increasing the bandwidth. You are going to have to read the manual there is quite a bit of difference between camera brands

You need to do the math and make sure you are not going to exceed a 1g port. If you do you might be better off buy a couple of fiber media converters and connect the far switches directly to your main switch on separate ports.

 

[Edsison]

I have not seen a actual limit stated but there likely is some technical reason. As long as each run is less than 300 meters it should work.

I suspect the actual limit is the bandwidth With your application the cable between the first and second switch will carry all the traffic for any switch beyond. If you are running high frame rate at a high resolution a 5mpixel camera can put out a lot of bandwidth. If they are like many security cameras I have seen they put out multiple streams at different resolution at the same time increasing the bandwidth. You are going to have to read the manual there is quite a bit of difference between camera brands

You need to do the math and make sure you are not going to exceed a 1g port. If you do you might be better off buy a couple of fiber media converters and connect the far switches directly to your main switch on separate ports.

 

[Edsison]

Thank you, Yes I am aware of the band width limitations of the multiple mega pixel camera video streams. I have had luck in past installations but not as dynamic as this install. I have considered multi mode fiber and switches with SFP ports.
If I relocate the Video Server head end and use a router to help balance two separate cable runs (one going north the other south of video server and then place the switches between a single longer ethernet run - who this help?

 

[Kewlx25]

You should never connect two devices via copper that have different grounds, even in the same building. You can get potentials between the grounds which will cause power to flow over them, which can cause all kinds of bad things to happen.