My 16 Channel Dahua NVR as of yesterday once about every 20 to 30 minutes will drop all the channels and just be black boxes but only for about 2 to 3 seconds then they all pop back up. I watched a camera on the webUI and it does not seem to go down so I am thinking it is NVR related, also does not see to ba able to access via SmartPS. Iv'e reboot the NVR a few times already as well.
Dahua NVR briefly dropping all channels
- Thread starter Bret_FL
- Start date
Fastb
Known around here
Bret_FL,
If you can use the native UI (using a monitor connected to the NVR directly [HDMI or VGA], this would eliminate your lan as a suspect.
This also means you don't have a POE-nvr.
Please confirm your cams are wired (and not WiFi)
What is running SmartPSS? Laptop, PC, etc.
How is the SmartPSS computer connected to the NVR? Wired lan, WiFi lan, or some WAN method across the internet?
Did your network have any recent changes?
On the computer running SmartPSS, can you surf in to the NVR webUI? Can you ping the NVR?
If you can ping the NVR, then setup a continuous ping, ie: "ping 192.168.1.108 -t" (without quotes). When the dropout event occurs next time, check if pings were also dropped.
Fastb
When viewing, are you using the native UI of the NVR, or the web UI of the NVR?
If you can use the native UI (using a monitor connected to the NVR directly [HDMI or VGA], this would eliminate your lan as a suspect.
To clarify, you surfed into the camera's webUI directly? Meaning your surfed through a switch/router that is between your NVR and cameras, correct?
This also means you don't have a POE-nvr.
Please confirm your cams are wired (and not WiFi)
This is interesting, please share more info.
What is running SmartPSS? Laptop, PC, etc.
How is the SmartPSS computer connected to the NVR? Wired lan, WiFi lan, or some WAN method across the internet?
Did your network have any recent changes?
On the computer running SmartPSS, can you surf in to the NVR webUI? Can you ping the NVR?
If you can ping the NVR, then setup a continuous ping, ie: "ping 192.168.1.108 -t" (without quotes). When the dropout event occurs next time, check if pings were also dropped.
Fastb
NVR is not Poe. Switches and Poe are in different locations throughout the house all wired back to the router, only wire running to the NVR is from the router. The NVR is connected to a monitor via HDMI cable where I do most of the general viewing.
The NVR . The NVR seems to come and go when trying to connect remotely as to wether it's showing up as on the network. When I first open hdmms directed at the NVR I can usually view a channel for a f. ew seconds or two then it disappears. The NVR always seems to show up on the client list on the router with its regular ip. I may try and disconnect it today from the router and see if I ping that ip to make sure something else not using it but nothing showing up on router as a conflict.
The NVR . The NVR seems to come and go when trying to connect remotely as to wether it's showing up as on the network. When I first open hdmms directed at the NVR I can usually view a channel for a f. ew seconds or two then it disappears. The NVR always seems to show up on the client list on the router with its regular ip. I may try and disconnect it today from the router and see if I ping that ip to make sure something else not using it but nothing showing up on router as a conflict.
Fastb
Known around here
Ruling out an ipconflict sounds like a good step
Fastb
Known around here
You're onto something here.
Another test, set your NVR for continuous recording (as vs "record on event") Later, check playback.
Q2: Are there gaps?
A2: If "no gaps", then your cam network (at least) is remaining up, the cams video reaches the NVR, and video is getting recorded.
Meaning your NVR is dropping off a functioning network.
Meaning an ip conflict of the NVR's ip addr may be the culprit, as you suspected.
A2: If "there are gaps", run the continuous ping test on one of the cams. Does it drop off when the NVR goes dark? What does log fille say?
Q3: Check the log file on the NVR. From NVR webUI screen (which is handy for me right now), it's under: INFO, LOG. On the nvr native UI screen, it's something similar. Check the log file for items at the timestamp of when the NVR disappeared. What was logged?
Q4:
Q5:
Q6:
You say it's happening more frequently today. Any hunches why?
- Is the nvr in a really hot room, and today was warmer than usual?
- Lotta lan activity (netflix, music, file transfers, etc)
Fastb
Q1: Plz confirm you surfed into the cam's webUI, and didn't view the cam through the nvr webUI. I suspect you surfed to the cam directly, but I want to make sure.
Another test, set your NVR for continuous recording (as vs "record on event") Later, check playback.
Q2: Are there gaps?
A2: If "no gaps", then your cam network (at least) is remaining up, the cams video reaches the NVR, and video is getting recorded.
Meaning your NVR is dropping off a functioning network.
Meaning an ip conflict of the NVR's ip addr may be the culprit, as you suspected.
A2: If "there are gaps", run the continuous ping test on one of the cams. Does it drop off when the NVR goes dark? What does log fille say?
Q3: Check the log file on the NVR. From NVR webUI screen (which is handy for me right now), it's under: INFO, LOG. On the nvr native UI screen, it's something similar. Check the log file for items at the timestamp of when the NVR disappeared. What was logged?
Q4:
When I view my NVR using a wifi connected laptop, I lose cams when the microwave oven fires up. All cams are wired, it's just my laptop wifi link to the cam/nvr subnet that is affected.
Q5:
Let's leave no stone unturned....
Q6:
You say it's happening more frequently today. Any hunches why?
- Is the nvr in a really hot room, and today was warmer than usual?
- Lotta lan activity (netflix, music, file transfers, etc)
Fastb
Last edited:
looney2ns
IPCT Contributor
Has any fans in the NVR ever been cleaned?
All fans operational?
All fans operational?