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I have 6 IP cameras on my network. 2 of them (both plugged in via ethernet cable) lose connection to the network (can't be ping'd) every time I connect one PC to my network. I've reached this conclusion by removing all the devices from my network and then adding them back, one by one, slowly testing to see if the cameras drop.

I tried to fix the problem by adding a new network card, but the problem still occurs.

All of the computers in my house use Windows 7 Home 64bit.

My network looks like this

Cable modem -> wireless router (A) -> 40 foot ethernet -> to wireless router (B) (connected Lan to Lan)

wireless router (A) connections: one PC (trouble maker?), 1 wired IP cam (this one drops) wifi printer. There is a wired connection to another switch: roku box, ip cam, Onlive micro console.

wireless router (B) connections: one wired ip cam (this one drops), one wired NAS, one wired PC, 3 wireless ip cams.

I can't ssem to figure out how to keep the cameras from disconnecting. Right now, I connected a wireless bridge to the PC that was connected to router (A) to keep it isolated and the cameras are not disconnecting. I want to connect it via ethernet because I need the gigabit connection to my NAS from both PC's.

Thanks for your help!

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closed as unclear what you're asking by Mokubai Jul 19 '14 at 13:21

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

What kind of IP addressing is in use? Can you (eventually) log into a camera and check its log? Anything interesting in the router's log? – sawdust Aug 24 '12 at 5:02
IP collisions perhaps? – Nifle Aug 24 '12 at 5:18
I am using reserved IP's for each device, and they are all different. The camera logs are garbage, they only tell who logged into them and when. I normally use them with Blue Iris software. I should mention that if I unplug the ethernet cable and plug it back in, the connection will be re-established for another 10 minutes or so. – Anthony Aug 24 '12 at 5:26
DHCP server is only running on the gateway router (A), no duplicate addresses. – Anthony Aug 24 '12 at 5:30
Have you tried dropping the reserved address of the offending computer (making it use standard DHCP)? – Everett Aug 24 '12 at 5:35

Try turning the router B as access point and change the channel to 1 for the router A and 11 for Router B. Use different SSID for each of them. Let each device use alternate routers for connection. This way there will be less interference and should should resolve the problem.

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Probe your network to see what MAC addresses and IP's are being used. Check what kind of traffic is going across your network. What kind of services, such as DHCP, DNS, RIP, etc, are being serviced by each router that might be causing conflicts of confusion?

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This question is two years and OP has posted an answer in the comments. – gronostaj Jul 19 '14 at 12:54

From OP's comment on the original question:

After weeks of having this problem, I think the culprit was software that came with my motherboard... Intel IT Director. As soon as I uninstalled it, the problem has disapperead. I don't know how it was causing the problem, but I tried reinstalling it and the problem started happening again.

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