NVR or Cameras causing network issues

[Dhil]

I have the NVR DS-7608NI-2 and I noticed I was having network issues, my main asus router would drop connections.
So from one computer IP to another IP, I performed a continuous ping. Every couple of pings I would get a timeout. At first I thought it was my router, then I decided to disconnect all devices one by one and noticed that I would get a steady ping when the NVR is removed from the network.
I could use wireshark to pin-point the issues, however I thought I would check if anyone else encountered network issues. What could possibly cause this?
I am currently running v3.4.94
all cams are on Static IP
UPnP is disabled.

Many thanks

 

[alastairstevenson]

What could possibly cause this?

If the NVR and camera traffic is traversing the router - some routers don't handle their switch ports traffic well and end up bottlenecked.
What's the network topology?

 

[Dhil]

The NVR is connected to a netgear switch which is connected through another switch which then goes to the Asus router
The NVR is blocked from accessing the web
thanks again for your help

 

[alastairstevenson]

The NVR is connected to a netgear switch which is connected through another switch which then goes to the Asus router

OK, so no camera/NVR traffic passing through the router.
Scratch that possibility then.

Is it a gigabit network? If so, traffic congestion should not be an issue.
If 100Mbps - depending on how many cameras and their bitrate, you could head into congestion issues.

And bad cabling could transmit enough errors that switches can shun ports as a protection mechanism.

 

[Dhil]

yes a gig, all switches and router

I do crimp my own cables, i have tested connections by using a cable tester, not sure what else to validate bad cables.

yeah i think i need to run a sniffer to see whats going on.

 

[Art K]

Where are the cameras plugged into? Any chance you have a loop?

 

[fenderman]

yes a gig, all switches and router

I do crimp my own cables, i have tested connections by using a cable tester, not sure what else to validate bad cables.

yeah i think i need to run a sniffer to see whats going on.

Did you use the 568B standard? Are they copper or copper clad aluminum CCA?

 

[Dhil]

568b, 100% copper
they are plugged in to the 7608NI, all have been configured to use static IP, all POE

 

[Dhil]

after further troubleshooting i discovered it was actually the netgear wndr3700v4 router it was connected to, i had configured it to AP mode so i could use it as a switch and 2nd access point. this configuration was actually flooding my network, dont know if its a bug in the firmware, i just decided to remove it and replaced it with an unmanaged 5 port switch. No more network issues!
thanks all!

 

[alastairstevenson]

Good that you got there in the end.
Just for curiosity -
In AP mode did you have the DHCP server disabled? I'm wondering about address conflicts.

 

[Dhil]

so setting the router in AP mode just makes it an access point with a switch, everything else should be off and was greyed out, that includes dhcp. dhcp should have been coming from my main router. the spare router gave me grief before, i didnt look deep into it but either routing protocols or dhcp must have been enabled, even though it was showing as off.
so i have the same feeling it was probably address conflicts.