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ONVIF Network Interface Specifications

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Multiple onvif supported cameras connected to One NVR

Aravinthleader opened this issue · comments

commented

Hi,
I have 36 cameras connected to a switch and NVR . While clicking the search button in the NVR menu, we are supposed to get all the cameras to be listed in the NVR. But we are only getting nearly 25 cameras listed and the count is random. When clicking the search button again it shows / listing 30 cameras. The count range is changing between 25 to 32 out of 36 cameras.What could be the reason for this issue ?

Thanks in advance.

commented

Looks like the NVR implementation has a too small UDP buffer. Search probably uses WS Discovery which responds with UDP packets. Since UDP is no reliable messaging protocol dropped packets may also occur due to bad switch implementation. Normally discovery should work well with hundreds of cameras.