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[paulojunior84]

SORRY BY MY POOR ENGLISH.
I'm with a problem using d-view cam. The cameras disconnects and connects in the live view. It happens in interval of minutes or hours. I searched the problem many times an used extenders/repeaters and don't resolve. I concluded that's not problem in the signal strenght of wireless(always up of 90% for the cameras - site survey of cameras). And without d-view cam active the network seems to be normal when making continuous ping to the cameras.

I tested the ping in the "Server PC of cameras" to the ip of cameras and is very low before open d-view cam(1-10ms max). If open d-view cam the ping to the cameras run random 5ms-40ms-70ms-400ms- 1200ms-timeout-40ms-300ms and all the pings to the local wireless network go up. If i close d-view cam all the the pings go very low again.

It's random and sometimes d-view cam works perfectly during many hours and the ping in the WLAN normal(5ms to 20ms with peaks to 50m-80ms max) but sometimes the ping is terrible in all WLAN to all(smartphones, notebooks..) when d-view cam is active and happen disconnects and losses framerate in the cameras d-view cam. When the problem occurs all the wireless LAN stay poor (tested with continuous ping Of a PC to other or a pc to one camera in the local network). All the pings go up. I changed channels of wifi and nothing. And again If I finish d-view cam the pings go normal instantly.

The PC server is connected to the router with cable and the cameras in wireless. I use a old notebook just for that: it's a core2duo T8300 2.4Ghz 4gb ram(Above the recommended for d-view cam). The total system charge of cpu never goes above 40 percent with d-view cam active and many ram free too.
The router is a TP-LINK WR1043ND V2.
Two Cameras DCS-932L updated with last firmware.
 What's happening? Someone?

One more time, sorry by my poor english.

[FurryNutz]

Link>Welcome!

• What Hardware version is your DCS? Look at the sticker behind or under the camera.
• Link>What Firmware version is currently loaded? Found on the DCSs web page under status.
• What region are you located?

What version of D-View are you using?

What wireless modes are you using?
What is the distance between the Camera and the main host router?
I recommend setting a static IP address ON the cameras outside of the main host routers default DHCP IP address pool: DHCP

Test cameras with uPnP and uPnP Port Forwarding both enabled on ALL cameras: DCS Cloud (L) Series Camera Configuration and Mydlink.com

• Any other WiFi routers in the area that maybe causing interferences? Link> Use InSSIDer to find out. How many? Use v3, its free.

[paulojunior84]

Thanks for reply.

The two cameras DCS932L:
Firmware Version:   1.12.02 (2015-10-06)
Hardware Version:   A for two cameras (A2 to 1 camera and the other I will confirm. I need disassemble the base)
Agent Version:           2.0.19-b35n

D-VIEW CAM 3.6.4
PC WINDOWS 7 x64

Wireless: 2.4GHZ bgn mixed(The router don't accepts the mode just "n"). 300mbps-450mbps speedboost. I tried on or off speedboost and channel 20/40MHZ or just 20Mhz still without results.
I used channel 1, 6 and 7. Now I'm using the channel 7 in just 20MHZ and Nobody using the channel 7 beyond me or overlapping this channel(no channels 5, 6, 8 or 9 actives in area).

CAM 1 is 12 meters from router but is connected with  extender/repeater WA 901ND. The repeater is 9 meters from router and the camera 3 meters from repeater. But I tested without repeater and even with good sinal does not solve.

CAM 2 is 6 or 7 meters from router

I have DHCP enabled in my network but the ip adresses are locked to the MAC(ADRESS RESERVATION). Always receive the same IP. The cameras always receive 192.168.0.116 and 192.168.0.117. I must disable the reservation to the cameras and to set static ip adresses? I think the results would be the same. BUT I DO IF RECOMMENDED!
uPNP and uPNP Port Forwarding in test. Does not solve.

- I tried disable antivirus and firewall and don't solve.

My impression is that sometimes the program makes the network stability go continuously degrading. There are not many connected devices or accessing the network during testing.
I tested the iSpy software and apparently the use of the network does not collapse. However I prefer d-view cam.
Sometimes it works perfectly for hours and sometimes the problem happens to any attempt to use d-view cam. Even with the idle network to other connected devices in both cases when the trouble occurs or not.


I apologize but I'm in Brazil. I read that the forum would be only for USA.

I appreciate the help.

[FurryNutz]

Thanks for reply.

The two cameras DCS932L:
Firmware Version:   1.12.02 (2015-10-06)
Hardware Version:   A for two cameras (A2 to 1 camera and the other I will confirm. I need disassemble the base)
Agent Version:           2.0.19-b35n

D-VIEW CAM 3.6.4
PC WINDOWS 7 x64

Wireless: 2.4GHZ bgn mixed(The router don't accepts the mode just "n"). 300mbps-450mbps speedboost. I tried on or off speedboost and channel 20/40MHZ or just 20Mhz without results.
I used channel 1, 6 and 7. Now I'm using the 7 and Nobody using the channel 7 beyond me or overlapping this channel(no channels 5, 6, 8 or 9 actives in area).
I don't recommend using channel 7 as thats an over lapping channel. 1, 6, 11 or 13 is recommended.

CAM 1 is 12 meters from router but is connected with  extender/repeater WA 901ND. The repeater is 9 meters from router and the camera 3 meters from repeater. But I tested without repeater and even with good sinal does not solve.
Can you test with only one camera to see if problem still happens?

CAM 2 is 6 or 7 meters from router

I have DHCP enabled in my network but the ip adresses are locked to the MAC(ADRESS RESERVATION). Always receive the same IP. The cameras always receive 192.168.0.116 and 192.168.0.117. I must disable the reservation to the cameras and to set static ip adresses? I think the results would be the same. BUT I DO IF RECOMMENDED!

uPNP and uPNP Port Forwarding in test. Does not solve.

- I tried disable antivirus and firewall and don't solve.

My impression is that sometimes the program makes the network stability go continuously degrading. There are not many connected devices or accessing the network during testing.
I tested the iSpy software and apparently the use of the network does not collapse. However I prefer d-view cam.
Sometimes it works perfectly for hours and sometimes the problem happens to any attempt to use d-view cam. Even with the idle network to other connected devices in both cases when the trouble occurs or not.
Is this a recent occurance with this problem or has this been going on for a while?

Can you uninstall  D-view and reinstall it and test again?


I apologize but I'm in Brazil. I read that the forum would be only for USA.

I appreciate the help.

[paulojunior84]

Thanks again.

One more information: usually the problem occurs during the day and evening looks more stable.
Due to the problem is more frequent during the day I think there could be some signal interfering but I test using inSSIDer or wifi analyzer on the smartphone and can not find sources of interference (channel) near the router or the cameras.

I don't recommend using channel 7 as thats an over lapping channel. 1, 6, 11 or 13 is recommended.
Inssider shows the channel 7 without overlapping in area. But Ok. I can change but I've tried other unsuccessful.

Can you test with only one camera to see if problem still happens?
Yes. Testing now if I use only one camera the pings remains low but is active both , the ping increases and swings down and to top at once regardless of whether the camera 1 or 2.
- One camera: ping PC in the LAN to the camera below 10ms average.
- Two cameras: ping PC in the LAN to the camera 5ms-30ms-20ms-50ms-90ms-30ms-10ms-5ms-120ms-30ms--20ms-sometimes timeout-35ms-8ms-210ms
- Two cameras without run d-view cam: ping to cameras below 10ms average.
But as I said sometimes the pings remain low during hours with 2 cameras and works normal.

Is this a recent occurance with this problem or has this been going on for a while?
I just accessed before the cameras in the cloud(mydlink.com and app mydlink lite) and only now I am using local monitoring (D-VIEW CAM). And without d-view cam everything is normal for access to cameras.

Can you uninstall  D-view and reinstall it and test again?
I've done this. During the onset of the problem  I was with version 3.6.3. I uninstalled and Installed the version 3.6.4.


I tested the D -View CAM in the same network with other notebook ( i5-2400m 8 GB RAM) connected via wifi. Similarly the problem occurs in the same times . Ie at the time of instability and network degradation the problem occurs like connected by cable or wifi systems and different configurations. And when you stability I can connect via cable or WiFi and remains stable. When the network is unstable I can restart the notebook the router and cameras and remains unstable when restart.

[paulojunior84]

I 've tried before removing the repeater and leave only the router and the cameras but using an almost free channel may suffer low interference(channel 1 and 6) . Unsuccessfully.

But now I'm trying the same thing(without repeater) and I'm using another channel on wifi where there is no direct interference near router and cameras.
I try to eliminate the possibility that the own repeater were causing interference in the network to use the same channel.

So far about 18 hours running smoothly with  ping to cameras and connection losses cameras. Viewing the log d -view cam no loss of connection of cameras in all that time.

if that is the problem just get confused by the fact that often run for hours without problems using the same repeater or suffering the same external interference

[FurryNutz]

If your using a repeater then it's known that repeaters can be a cause of bad performance. This may be the issue. Let us know how it does with out the repeater being online.