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When we restart our switch or if power goes off and once switch online the CCTV gets disconnected and the we cannot even reach the camera . The brand what we are using is D-Link F5604 model and the switch what we use are Huwaei S5735 and we have an firewall (Huwaei usg6525E) and core switch as well . The Vlan lan are configured through the firewall …
We have an centralized building for the Control room where are camera need to be access . There 10 are building where we have CCTV cameras .

When I reset the camera the camera is online and working . If I restart the switch or power off the switch after that the cameras are not online .

What would be problem for this ?

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Are the cameras using a static IP address or DHCP? Is the switch supplying the correct power to the cameras?

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sounds like a glitch in your cameras. make sure the firmware is up to date

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Yes I am using static IP

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Yes I have done a firmware update . Which is update to date .

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Yes it is an POE Huwaei switch

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I would have blamed DHCP straight away, except for reading you are using static IP…
The NVR also has a static address, or is that designated by the firewall?
Is the NVR broadcasting a network location or is it playing secret squirrel?
NTP up to date & inline with the rest of the network & can the NVR reach the web to update NTP?
Are the cameras on the same range as the NVR’s or are they using a separate subnet with the NVR as gateway?
10 buildings with I am guessing 8-16 cams each? You need to let us know a bit more about the network topology, as I am guessing you have a few links in your daisy chain.

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We are using Vlan 5 and the IP range starts from 192.168.10.3 it is static IP , DHCP is disable . The NVR is 192.168.10.5 . We have 3 NVR …
All the buildings has fiber cable pulled and all cables come to the Main Server Room where the firewall and core switch is installed and NVR .

It is total of 120 cameras .

From the firewall we are pushing the vlans to core switch and access switch of the buildings .

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After it comes back up, can you bounce POE on just the port to the camera? Does that fix it? The issue may be the camera is asking for dhcp before the switch is ready.

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That switch has an option to turn off PoE to save power , maybe try disabling it, some cameras don’t handshake with power save properly and the switch thinks nothing is there and turns the
power off…

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The switch what we are using is huwaei S5735 .How can enable the POE for this or check the status of Port this switch doesn’t have an Mgmt port .

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How can I disable the POE … If I disable POE will camera get power . Since the camera needs Power to run it .

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No no, you want to disable power managment thinggy

This is from AI, I don’t have that switch, telnet/putty to command line interface (how quaint)

Enter system-view * Enter poe power-management {auto | manual} [slot slot-id]

  • To enable power auto-negotiation, run poe power auto-neg enable
  • To change the power supply mode, run poe { af-inrush | at-inrush | bt-inrush } enable
  • To check the energy-saving mode, run display power manage mode
  • To check the power supply mode, run display poe power-state

The default power management mode is automatic

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You also have POE switches on each building, connecting directly to the cameras?

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Yes each building I have POE switch …

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You can still login to them through web interface.
The fact that it is happening to all cameras points to the switch.
If you download the footage, is there a gap where the NVR shuts down, or only a loss of image, while the recording continues?

https://support.huawei.com/enterprise/en/doc/EDOC1100334224/643993ea/logging-in-to-the-device-for-the-first-time-through-the-web-system

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Many of the building I am facing this issue . From NVR it shows the camera is offline but when I ping to the camera there is pinging and I can reach to that ip when I try to login via that ip in web browser I am unable to reach the address .

One building there are 3 cameras working without any issue even I power off the switch or restart the switch those camera works fine .

I have to remove the network cable and plug several times to get the camera online , once it is online I will be able to login to the camera but picture would be gray , if I reset the camera it would work fine but if I restart the switch or power of the switch and turn on back the camera will be back to same issue where it will be offline .

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Have you contacted D-Link about this?
There is no real common factor to explain the issue, other than D-Link…

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Are you 100% certain that none of your wired Ethernet cables exceed 100 meters distance? (Even though I know you said you had fiber runs between buildings.) Such as from the switch to the NVR? Or are any of these using coax-to-CAT5/6 media converters?

As @blake-murphy stated, the cameras seems to be the common problem, thought it would be odd if all of them are having failure issues, unless it is a bad firmware update that they are all sharing. (D-Link are also what I consider consumer grade cameras, so I don’t have a lot of faith in them.)

Also note, POE power can often go beyond the 100 meter distance limit so that the camera will power on, but when you go past 100m distance, network communication starts becoming unreliable and intermittent. So if you have cameras that are exceeding 100m CAT5/6 links, don’t assume just because it still powers on that network communication should be stable.

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There is no converters , Each building as own wiring which is not exceed 100 meters . Is there any possibility that the switch is not giving exact power to the cameras . On the same switch the IP phones and data connections are connected to. Since all the ports accommodate and full it could be a reason

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