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Dahua NVR question
This thread has 10 replies. Displaying all posts.
Post 1 made on Wednesday June 2, 2021 at 07:24
Gman
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We are installing a Dahua system and customers router is in a very difficult location. In order to save some time, we would like to run all of the camera cables to one location and then one cat cable to the router. We would be using a POE switch at the camera head end then from there up to the router on the second floor with a LAN run. Have never not run cable to the NVR so my question is...is there going to be issues with the NVR seeing the cameras if they are not directly connected to the NVR?
Post 2 made on Wednesday June 2, 2021 at 08:32
jberger
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As long as it's a regular, flat, layer 2 switch, it should be fine.
If it's attempting to VLAN then you could have issues. Make sure the switch you install has the PoE budget to run all of the cameras you want to attach.
Post 3 made on Wednesday June 2, 2021 at 11:32
Daniel Tonks
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Technically the NVR should work even if the cameras are on the external internet, the issue might be on how much can be done automatically. For example, when you first plug a Dahua camera into the NVR it does a bunch of setup on it automatically, like setting a default password. So each camera will likely have to be setup with its web interface.

I’m pretty sure I’ve read somewhere that you cannot have more than one camera plugged into a single one of the NVRs private network ports, so all your camera traffic is going to have to be routed through the main network port.
Post 4 made on Wednesday June 2, 2021 at 18:16
IRkiller
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On June 2, 2021 at 07:24, Gman said...
We are installing a Dahua system and customers router is in a very difficult location. In order to save some time, we would like to run all of the camera cables to one location and then one cat cable to the router. We would be using a POE switch at the camera head end then from there up to the router on the second floor with a LAN run. Have never not run cable to the NVR so my question is...is there going to be issues with the NVR seeing the cameras if they are not directly connected to the NVR?

Should work great. This is the exact brand and scenario we use for C4 projects that require the PoE cams to be outside of the internal NVR for individual driver setup on each cam. You just point the NVR to the cam IP's. The native dahua app works fine in this setup too.
how in the hell does ernie make money?
Post 5 made on Wednesday June 2, 2021 at 23:20
AnilAppleLink
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Yes this will work. Technically a camera can be anywhere and as long as you are networked to it you can see and record it.
Just get yourself a regular unmanaged 10/100 PoE switch with Gigabit uplink/downlink ports big enough to handle all cameras. Expect to do a lot of manual network setup for each camera. It will not be plug and play as if you are connecting the camera directly to the PoE on the NVR itself. But as long as you understand basic networking you should be good. If your NVR has dual ethernet ports or multiple PoE and a single LAN port you will need to run one cable from NVR to the network switch and another from the NVR to the router.
--
Thanks,
Anil A. Apple Communication LLC. www.apple-link.com Pro-AV - Pro Lighting - Networking - Security Cameras - Home Theater For all your low voltage cabling needs
Post 6 made on Thursday June 3, 2021 at 00:45
iform
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No issue. We did this on a job with 60 cams and we put them all on their own vlan along with the nvr. All works great.
OP | Post 7 made on Thursday June 3, 2021 at 05:25
Gman
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Great. Thanks everyone for the input.
Post 8 made on Friday June 4, 2021 at 11:36
SWOInstaller
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I do this all the time with our installs now even if the recorder is in the same rack as the network. This allows for a lot more flexibility installation wise and setup wise on the cameras themselves. This makes it a lot easier for the Crestron jobs to be able to bring the ONVIF stream onto the touch panels for each camera (I know there are other ways to do this). All cameras are set to static/DHCP reserved addresses so they can be added to the recorder. Additionally you could eliminate the recorder and just install SD cards into all the cameras.
You can't fix stupid
Post 9 made on Thursday July 22, 2021 at 09:51
andrewinboulder
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On June 4, 2021 at 11:36, SWOInstaller said...
I do this all the time with our installs now even if the recorder is in the same rack as the network. This allows for a lot more flexibility installation wise and setup wise on the cameras themselves. This makes it a lot easier for the Crestron jobs to be able to bring the ONVIF stream onto the touch panels for each camera (I know there are other ways to do this). All cameras are set to static/DHCP reserved addresses so they can be added to the recorder. Additionally you could eliminate the recorder and just install SD cards into all the cameras.

If you use all SD cards instead does playback of video on the app works exactly the same way as if there was a physical NVR?
Post 10 made on Tuesday August 3, 2021 at 20:29
AnilAppleLink
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On July 22, 2021 at 09:51, andrewinboulder said...
If you use all SD cards instead does playback of video on the app works exactly the same way as if there was a physical NVR?

I highly doubt it with the app. In the way you are talking each camera would be brought into the app as separate stream.

When you have an NVR you connect to the NVR and then it allows you to access all of its stream at once.

So during playback you would have to playback each camera individually whereas with the NVR you can playback multiple cameras pulled from a single drive location.

Now with the software on a computer you may be able to playback multiple streams at once and it may work more close to the NVR but expect it to be laggy because you are pulling recordings from multiple streams and SD cards.
--
Thanks,
Anil A. Apple Communication LLC. www.apple-link.com Pro-AV - Pro Lighting - Networking - Security Cameras - Home Theater For all your low voltage cabling needs
Post 11 made on Tuesday August 3, 2021 at 20:50
edizzle
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this is how most higher end or higher capacity NVRs work anyway. for example most 32,64,128, etc. channel NVRs do not have ANY internal networking or PoE for cameras. they have to go to a switch
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