Frequent POE switch restarts required as cameras go offline,

[Qbert 0]

Hello I work for a Security company, Installing mostly Ip cameras.

 

Problem:

At many different job sites, With different brands of Ip cameras, and different brands of PoE switches, Cameras Will RANDOMLY go down, and will be easily fixed by a PoE switch 99% of the time.

 

Any suggestions as to why? the only constant is the Software- Nuuo

[milkisbad 0]

Could be not enough power per camera? Does it only go offline at night when the IR comes on?

 

Or too much bandwidth...some PoE switches are only 100 Mbps but if you put like 16 cameras in....

[buellwinkle 0]

What specific PoE switch and how many cameras per switch, what camera compression and are multiple switches daisy chained or go to another switch and what switch is that?

 

Two possibilities. Some NVR software is sensitive to network overloading, like trying to put 8 1080P cameras using MJPEG on one 100Mbps switch at 30FPS, may work for a while but then a camera loses a connection for a split second and the NVR software drops the camera. The other is power per port. While it may seem switches advertise 15.4W, but some have a lower aggregate like half power if you use all ports, so 7.7W per switch but that's at the switch, after power loses from long runs, it may only be 6W and for many IR cameras, that's not enough. You would notice this by a camera dropping out at night about the time IR illuminators come on, usually the one with the longest run.