Hikvision NVR 256-CH No enough network bandwidth

IbrahimSluma

IbrahimSluma

n3wb
Jul 27, 2025
5
0
Libya
Hello, I've bought DS-96256NI-I24 NVR and i plaaning on installing 140 8MP Bullet camera & 60 6MP turret camera on very largae area.

So I've installed around 160 camera in total now and i have many camera down due to No enough network bandwidth, And when i checked NVR traffic in the NVR i saw its around 1GB, So I've changed all camera to start using H.265+ and delete all camera and then re-add them,

Now around 140 Camera is working and 20 is down to same error, When i checked network traffic its around 280-300 MB, The NVR can handle 768 Mbps of traffic! ( All camera updated, NVR dont have update ).

When i did the calcaltuinos it should all be just working fine even with the 250 Camera.

So why im getting bandiwth error now when the traffic got lowered into 280MP ?

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Do you feel that a frame rate of 25 is necessary? 15FPS should be sufficient.
 
@TonyR honstly i would like to even go higher then 25, However even with 25 FPS the NVR should be able to handle the bandwith.
Also question when i set FPS to 15 or any other value, The playback is also will be on same FPS not higher right ?
 
IbrahimSluma said:
@TonyR honstly i would like to even go higher then 25, However even with 25 FPS the NVR should be able to handle the bandwith.
Click to expand...
Yes, specs say it should but you may have to try it....setting that many cameras lower would be a pain in the butt for sure.

IbrahimSluma said:
when i set FPS to 15 or any other value, The playback is also will be on same FPS not higher right ?
Click to expand...

Correct
 
TonyR said:
Yes, specs say it should but you may have to try it....setting that many cameras lower would be a pain in the butt for sure.
Click to expand...
Yeah i already did it with h.265+ on each camera, However what i dont understand is the traffic in NVR network is 280MB, so why im seeing the error message ?
 
Using AI in the NVR instead of the camera can greatly reduce the bandwidth capacity of the NVR. Make sure those features are not enabled in the NVR.

Shutter speed is more important than FPS.

The NVR might not be able to.handle all those 8MP and 6MP cameras.

Many people here have to run multiple NVRs because they are running too many high resolution cameras.
 
Gigabit networks need room for transactional overhead. So a true 1GB connection might actually be about 768-800 Mbps.
maybe your network should be wired in for 10 Gbps connectivity.
Even then, the NVR hardware probably cannot accept a full load of cameras, at maximum settings.
You'll need two of those NVR's to run at high frame rates and high resolution.
We NVR users have also found a frustrating problem with the Advertised bandwidth being bullshit when fully loading an 8,16 or 32 channel NVR .
The hardware in the NVR is not robust.
The Liars in marketing sell you these specs.
But in real world experience they dont meet them
UNLESS your turn the resolution down to 720 and the FPS down like 8FPS on the least important cams.
WHICH is why I run Blue Iris.
 
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Here is a higher end model. the link shows more enlightening specs than your link you provided us. You see listed the cameras it can handle and how many.
www.hikdistribution.com

HIKVISION DS-96256NI-H24R 256-ch 4U 8K Super NVR

Wholesale 256-ch 4U 8K Super NVR-HIKVISION DS-96256NI-H24R,Buy the best price of 256-ch 4U 8K Super NVR-HIKVISION DS-96256NI-H24R,Check 256-ch 4U 8K Super NVR-HIKVISION DS-96256NI-H24R Price
www.hikdistribution.com www.hikdistribution.com
 
IbrahimSluma said:
Hello, I've bought DS-96256NI-I24 NVR and i plaaning on installing 140 8MP Bullet camera & 60 6MP turret camera on very largae area.

So I've installed around 160 camera in total now and i have many camera down due to No enough network bandwidth, And when i checked NVR traffic in the NVR i saw its around 1GB, So I've changed all camera to start using H.265+ and delete all camera and then re-add them,

Now around 140 Camera is working and 20 is down to same error, When i checked network traffic its around 280-300 MB, The NVR can handle 768 Mbps of traffic! ( All camera updated, NVR dont have update ).

When i did the calcaltuinos it should all be just working fine even with the 250 Camera.

So why im getting bandiwth error now when the traffic got lowered into 280MP ?

View attachment 225373
Click to expand...

1. for that large installation You should use VMS not NVR. NVRs are too much underpowered..

2. it's not how much network bandwith is used by camera. But how much bandwith is reported by camera as maximum which can send.
Can you show what encoding settings (all for main/sub stream) you have on both 8MPx and 6MPx cams? h265+ (plus part, not h265 part) can be a problem here - I don't know how HIK cameras calculate max bitrate here..

3. there is risk when you deleted all cams, NVR didn't subtract counters properly.. In that case, you will need to default to factory NVR and add all cams one more time.. but before that, show your encoding settings on all cams...

4. your NVR have 768 MBps network bandwith.. with 200 cams, this is 3,84 Mbps per camera (both main and sub stream)...
 
wittaj said:
Using AI in the NVR instead of the camera can greatly reduce the bandwidth capacity of the NVR. Make sure those features are not enabled in the NVR.
Click to expand...
I dont use any AI feaures


Flintstone61 said:
Gigabit networks need room for transactional overhead. So a true 1GB connection might actually be about 768-800 Mbps.
Click to expand...
For me 25 FPS on the high res is more then enough !


alastairstevenson said:
How are the NVR ethernet interfaces connected to your LAN / what is the capability of the LAN interface?
Are you trunking the NVR ethernet interfaces / how many are connected?
Click to expand...
I'm only using 1 interface Lan ( 1GB ), Should i use more then 1 LAN on same network ?


steve1225 said:
1. for that large installation You should use VMS not NVR. NVRs are too much underpowered..

2. it's not how much network bandwith is used by camera. But how much bandwith is reported by camera as maximum which can send.
Can you show what encoding settings (all for main/sub stream) you have on both 8MPx and 6MPx cams? h265+ (plus part, not h265 part) can be a problem here - I don't know how HIK cameras calculate max bitrate here..

3. there is risk when you deleted all cams, NVR didn't subtract counters properly.. In that case, you will need to default to factory NVR and add all cams one more time.. but before that, show your encoding settings on all cams...

4. your NVR have 768 MBps network bandwith.. with 200 cams, this is 3,84 Mbps per camera (both main and sub stream)...
Click to expand...
Im far away from the installed site, Will try to take picutre on those settings as soon as possible.
And i dont use sub-stream, Only 8 Camera i use sub-stream with the hik connect app on TV.
 
IbrahimSluma said:
Im far away from the installed site, Will try to take picutre on those settings as soon as possible.
And i dont use sub-stream, Only 8 Camera i use sub-stream with the hik connect app on TV.
Click to expand...

NVRs always are using both main and sub-stream.
Recorded is only main stream, but sub-stream is for viewing and transmitting to client...

You must always add bandwidth used by both..
 
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