ip camera keep disconnecting/ network/ bandwith

[asco]

hi everybody
I have on my place 4 switch cisco catalyst 2960 /100mbits ports managable
all the switch are connected to a core cisco switch
i have setup 32 cameras of 3MP each on this switch
-first switch linked to core switch fiber optic with 2 cameras (distance to core 300m)
-Second switch linked by cable to core switch less than 50 m connected 6 cameras
-Third switch connected to core switch by cable distance to core switch 50m - connected 7 cameras
-fourth switch connected by cable to core distance 80m connected 3 cameras

all my cameras are working but sometimes i have the same cameras that keep disconnecting and disappearing from my network
i checked cable, connector , i replace camera, change ip adress but still the same.
the cameras that keep disconnecting are on switch 2 and switch 3

i have conclude that it's bandwith problem, but what suprise me is that it's always the same cameras that keep disconnecting
does bandwith probleme will not disconnect random camera?

All my cameras are connected to switch 100mbp

solution:
should i connect to each of my switch a 1000mbps switch?and plug all cameras on the 1000 switch?

question:
all my cameras are connected to the 100 switch on vlan6.

how to connect a non managable 1000 switch to the cisco switch port 1000 on a different vlan than default?
thanks to help

 

[nayr]

If you have a managed catalyst then you should be able to view port details and see the throughput to your remote switches.. your getting close to maxing out those uplinks but should still have a bit of overhead.

you could try detuning your video feeds, try dropping all the cams on switch 3 down to 1080p from 3MP and see if that alleviates your issues.

You really only need Gigabit uplinks, your managed switches can do port vlans to dumb switches.. dumb switches will strip vlan tags so you cant use tagging, the entire switch will be on that vlan.

 

[asco]

hi thanks for your help<br>since i change the resolution from 3MP to 1080 i have less lost connection<br>also i have reduce bitrates on the nvr to 1 mbps<br>i will try connect a 1000 switch to every manage cisco 100 switch<br><br>my question is :<br>1. is it better to have 2 switch and share camera between them or using juste 1 switch?<br><br>i mean is it better to have more switch to have more bandwith?<br><br>2. if i connect switch 1000 to switch 100 does that mean i will have more bandwith? or cause they are on same network they all share the same bandwith?<br><br>I will try to connect directly the nvr to a switch 1000 without interconnecting with my network that will make an independant installation for 5 camera<br>and hopefully will allow more ressource for the rest of the network.<br><br>the thing is only 1 swith is close to nvr the other are very far and connected via optic fiber<br><br>thanks for helping me<br><br>

 

[nayr]

typically you want them all terminated at a central point like a wiring closet as much as possible, internally the switches have massive amount of bandwidth on the local bus, any one worth its salt can guarantee full speed between all the ports simultaneously.. but when you branch off then the uplinks become the choke point.

but thats presuming everything is within reach of copper, sound like you got a good need for a few local switches with very strong uplink connections since you have a fiber run.. you can even get 10Gbit spf links between your switches with that fiber should you ever need the throughput.

Sometimes you have to branch networks off into a tree setup instead of a central trunking point, yeah ideally you want everything trunked through a single device but as long as you design your network correctly its fine branching switches out to buildings and floors.. thats the advantage of IP over anything else.

Is there any chance you can move your NVR location so its plugged into switch 3 or whatever switch has the most cameras plugged into it? then the uplinks wont have to deal with so much traffic when the majority of your cameras wont have to traverse uplinks.

 

[asco]

hi everyone

i realise that the the camera that keep disconnecting are always the same so i dont think its bandwith problem
what i did is changing the power supply

each of my camera are connected to it 's own power supply 12v 2A.

when i change the power of the camera that keep disconnecting they came back to the network automatically.

so i am changing all the powers of the cameras.

now i am looking for an original power supply brand as what i am using are from china.

could anyone refer me to an european specialise power supply vendor.

thanks

 

[nayr]

why no PoE?

 

[asco]

my camera are not poe

should i connect them to poe splitter?

i forgot to mention that when i wire my cable i always put the power supply on the switch side cause of the power source and the inverter.

that mean even if my camera is at 50m
i use 4 wire for video signal ( W/O , orange/ WG/ green that are at 123 6) position
and i use WBrown/Wblue and Blue/brown for the power so that video and power run on same network cable.

thanks

 

[nayr]

I would suggest it, you can use a standard 48v POE switch and use these adapters on the far end: http://www.amazon.com/ELEGIANT-Ethernet-Splitter-Adapter-Cameras/dp/B0146LFMZG/

that will allow you to push higher voltage through longer runs with without dropping too much voltage.. and then you can casually upgrade to Standard PoE cameras as time/money permit..

 

[asco]

are this poe splitter ok for my 12v camera?
thanks

 

[nayr]

look up the specs, if it'll run under a 2A envelope @ 12v then it'll work just fine..

 

[asco]

Hi please question

what is the best network category cable for ip camera?
cat5?cat5e?cat6?utp?ftp?

which one is the best for not loosing video signal

thanks

 

[Kawboy12R]

Cat 5e utp is the daily workhorse. Generally Cat 6 for higher power requirements like ptzs or cams with heaters because of the larger wire gauge. Choose burial grade for, well, burying or even exposed outdoor locations. Cat 5 avoid like the plague if you can even find some. People that say "Cat 5" nowadays generally really mean it as shorthand for Cat5e. Ftp is file transfer protocol. Maybe you meant stp? Shielded twisted pair.

Any properly installed and routed cable suited for the location should never lose signal to an IP cam at under 100m. If you are, it wasn't installed/routed properly (too close to power wires or a noisy fluorescent light ballast?). Look for routing mistakes, bad crimps, or breaks in the wire. Avoid copper clad aluminum (CCA) like the plague. Also, use solid core for all runs, not stranded wire. That's basically just for patch cords.

 

[asco]

hi i used cat5 copper cable is that ok?
all my cable are copper cause i found some cat5e cable but they are zinc made.

i read that copper are better.

also prices are different
thanks

 

[Kawboy12R]

Cat 5 should be fine for cameras. A lot of Cat 5 is made to the same standards as 5e but isn't tested or certified as 5e. I wouldn't go looking for 5 over 5e to save a few cents per run. 5e does have better crosstalk (error) rejection which might save you some trouble.

 

[asco]

hi
next to each network cable cat5 i am also running a power cable 3X1.5 for the power supply as i would like to put the camera power supply next to the camera and not ont the switch side.
previously i was running the power and the video signal on the same network cable
but for my new installation i am separating the cables

should i put a distance between the 2 cable? that are being run parrelly?like 30 cm far
thanks

 

[Kawboy12R]

Always separate power and data cables just to be safe. 30cm should be fine.

 

[tainted]

Can cabling issues cause me to not be able to view the main stream of a certain camera? Sometimes I can view it fine through ivms or the web portal but other times when i switch to main stream the video will never load. If I log directly into the camera i can always see the main stream without issues.

 

[Kawboy12R]

If you can always connect one way then it makes me think that the cable is fine. A hardware problem usually affects everything, although I have seen some NVR software be more tolerant of errors and dropped network packets in a wifi connected system. It'd have to be a lousy noisy cable to be as bad as wifi but then I'd expect to see video tearing or digital artifacts or complete disconnection in every viewing source. I suppose you could temporarily bypass the run with a premade patch cord and see if that makes it reliable. That doesn't cost much except time.

 

[asco]

Can cabling issues cause me to not be able to view the main stream of a certain camera? Sometimes I can view it fine through ivms or the web portal but other times when i switch to main stream the video will never load. If I log directly into the camera i can always see the main stream without issues.

hi i had this problem today i was able to see the video from the web portal but not from the nvr
i think this probleme is more about network and memory
try reduce bitrates, restart nvr, delette all cameras and search again

hope this will help

 

[asco]

Hi i had a serious problem today

3 of my cameras just freeze.

let me explain my ip camera had a small light to show the data traffic so when the camera is working i can see the light blinking fast

today i lost the connection of 3 camera and the 3 had the same probleme the ligh just freeze it was on but not blinking

i had to take the power off and on again and they start working again
for one of them even the power off and on didnt work i had to completly change the camera

do you think this is a ip conflct?
i am very sure about the ip none other machine are using the same
but i had dhcp enable on my router could this cause the freezin camera?

thanks to help my client is very far and the camera are pretty high i hope i dont have to do that every time

did anyne had the same issue?

thanks