D-Link Forums
The Graveyard - Products No Longer Supported => IP Cameras => DCS-932L => Topic started by: natrajrs on October 04, 2012, 09:48:46 AM
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i have upgraded my dcs-932l firmvare .after that my live video displays blank and connection is getting lost frequently.somebody pl. help
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i have upgraded my dcs-932l firmvare .after that my live video displays blank and connection is getting lost frequently.somebody pl. help
Has anyone else experienced this issue after the firmware upgrade?
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I too have noticed frequent "lost connection" issues since the update. It only loses the connection for a few seconds, and then reconnects. As further information, I do not notice any problems with other streaming applications. When it first occured, I decided to watch for the problem for a few weeks, and if it continued, I would reload to older firmware. I imagine if I wanted to use motion detection, these disconnects would pose a serious problem
Regards,
Bob
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I too have noticed frequent "lost connection" issues since the update. It only loses the connection for a few seconds, and then reconnects. As further information, I do not notice any problems with other streaming applications. When it first occured, I decided to watch for the problem for a few weeks, and if it continued, I would reload to older firmware. I imagine if I wanted to use motion detection, these disconnects would pose a serious problem
Regards,
Bob
Thanks for the info. How frequently are the connection losses? I haven't experienced any random disconnects (yet), but then again, I'm not routinely monitoring my DCS-932L.
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I do not monitor the 932 full time, but rather check it once a day. It has lost connection each time I check, since the last update. I checked it a few minutes ago, and during the course of about a half minute, it lost connection twice. It always reconnects, but this makes me uneasy. In a couple of weeks I will leave for an extended time, and I rely on the 932 to check that the furnace/electrical power is still functioning. I will be about 2000 miles from here, and not in any position to do much trouble shooting.
On a more general note, I have an older dlink router which has a bug in the "save wireless" routine, that they knew about and did not fix over a couple of updates. It still has that same bug today. Thus I do not have a lot of confidence in the ability of their developers and/or their product support. Just my own experience talking here.
Others may feel differently.
Never the less; it is what it is.
Regards,
Bob
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On a more general note, I have an older dlink router which has a bug in the "save wireless" routine, that they knew about and did not fix over a couple of updates. It still has that same bug today.
What model router?
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DI 524, which is over 15 years old. I have a few Linksys routers that work much better, but I keep those for when I am travelling (I use them in repeater mode). Other than the "save wireless" bug the 524 works for my home use. By the way, the bug does not show up if using a very old MS Internet Explorer. A modern browser (I use Firefox) will produce the bug. If you are curious, and have access to a 524, you can try this: enable a wireless security (eg WEP), set a password in the wireless security tab. Click Apply, then either log out or just refress the page. The changes will not be saved. This bug has been around ever since I purchased the router, and despite numerous attempts to get it fixed (including myself), it prevailed throughout 2 software updates. I have not tried it myself lately, but I have read that Internet Explorer 9 does not work.
Not much of a problem here at home, since we do not use wireless. Whenever we need secure wireless at home, we use a Linksys router. It is only needed for short times.
Hope this helps...if you need a link to the actual java coding bug, I imagine I could again find it. It involves a call to a non-existant subroutine.
Regards,
Bob
EDIT: Here is a link detail the bug:
http://webcache.googleusercontent.com/search?q=cache:DeYNy8Hd398J:doquent.wordpress.com/tag/di-524/+524+bug+apply+wireless+dlink&cd=27&hl=en&ct=clnk&lr=lang_en
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DI 524, which is over 15 years old. I have a few Linksys routers that work much better, but I keep those for when I am travelling (I use them in repeater mode). Other than the "save wireless" bug the 524 works for my home use. By the way, the bug does not show up if using a very old MS Internet Explorer. A modern browser (I use Firefox) will produce the bug. If you are curious, and have access to a 524, you can try this: enable a wireless security (eg WEP), set a password in the wireless security tab. Click Apply, then either log out or just refress the page. The changes will not be saved. This bug has been around ever since I purchased the router, and despite numerous attempts to get it fixed (including myself), it prevailed throughout 2 software updates. I have not tried it myself lately, but I have read that Internet Explorer 9 does not work.
Not much of a problem here at home, since we do not use wireless. Whenever we need secure wireless at home, we use a Linksys router. It is only needed for short times.
Hope this helps...if you need a link to the actual java coding bug, I imagine I could again find it. It involves a call to a non-existant subroutine.
Regards,
Bob
EDIT: Here is a link detail the bug:
http://webcache.googleusercontent.com/search?q=cache:DeYNy8Hd398J:doquent.wordpress.com/tag/di-524/+524+bug+apply+wireless+dlink&cd=27&hl=en&ct=clnk&lr=lang_en
Let's see if I can get one of our resident router experts on this thread. . . ;)
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Preferred wireless security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES, so you might want to try TPIK only or Auto. However being that old, I'm not sure if the 524 has any forum of WPA let alone AES. That model was phased out of production in 2008 and supported ended a year later in 2009. Any development or fixes was stopped long ago.
Setup DHCP reserved IP addresses for all devices ON the router.
Ensure devices are set to auto obtain an IP address.
Set Firewall settings to Endpoint Independent for TCP and UDP under Advanced/Firewall.
Enable uPnP and Multi-cast Streaming under Advanced/Networking. Disable uPnP for testing Port Forwarding rules.
I would recommend trying a new model router, DIR series and see if the problem of a disconnection. Go to a store that has a refund policy and get one to test out for 30 days. Disconnect everything else accept just for one PC, router and the 932L. Will probably work better for you. Use IE 8 or 9 to test. Check compatibility mode as well for IE.
Is this disconnection seen using a different PC?
I would also recommend for any wired PC, updating LAN cabling. Ensure LAN cables are in good working condition. If you get into a new DIR series router, CAT 6 is recommended.
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I am sure it is not the router...ie. 99.9 % of the time the wireless is off, and I use only rj45 connection. No disconnects occur on any other website (streaming from youtube, ted, playacoffee). The only time diconnects occur is when connected via dlink to the 932l, and this only started to happen after the software update.
You might want to read the last few posts more carefully: The reference to the wireless security bug in the dlink router has no bearing on the disconnect problem, but was mentioned to illustrate my (personal) distrust of dlink support history.
Now, back on track: I wonder if any others are experiencing these disconnects?
Regards,
Bob
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The only reason why I made reference was the that fact that you had injected information about the bug which seems not relvant in the first place with your issue of disconnections.
I would go back to the previous FW version on the DCS and see if the problem follows. If so, then you'll know.
I would try a different PC, and different browsers like Opera and see if the problem follows. Please try some of the suggestions as for setting up reserved IP addresses ON the router for ALL devices and see this this can help.
Maybe someone can review your router settings with you using Link> teamviewer (http://www.teamviewer.com) if your interested. Its safe and secure.
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For what it's worth, I experienced intermittent DCS-932L connectivity issues using the DIR-615, which went away after upgrading to the DIR-857.
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Using this same FW, your DCS is working fine?
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Using this same FW, your DCS is working fine?
My point exactly. However, there are two DCS-932L owners reporting intermittent connectivity issues after the FW update. Router or FW? :-\
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Why we need to see if they can test other routers if possible, check IP reservations, check LAN cabling, test different PCs and browsers to be sure. Could be either one at this point. If your not experiencing this with your devices, I might presume this could be a router issue at this point with other user. Need to narrow it down if we can. FW can't be ruled out either. :-\
Need to collect other users router information as well to see what they have.
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Once again. . . Are there any other DCS-932L owners experiencing connectivity issues that started after updating to this latest firmware version?
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AFurryNutz,
First off, let me apologize if I sounded abrupt. I did not mean for you to take it personally.
Some observations here. I continue to use the old dl324 for just that reason; I have used it for so long that I trust it more than some newer ones that I have. In particular since I will be miles away for abut 5 months.
I have cleared the status/log page of the router, so I can check for any power outage, dhcp problems in the log.
I have set the ntp time server to get accurate event times logged. No other changes have been made to the router setup for quite a long time.
I have connected and tested for disconnects using lan connection with this computer only connected. No disconnects observed for 3 trials.
I then connected (by editing the 524 html file) by wireless wpa psk, and ensured it the only computer on the network. No disconnect observed so far (only one trial so far).
My wife logged onto a music streaming site about half hour ago. I will do more trials while she is connected.
More more bit of information. Last winter I had the ISP downgrade the speed to about 35 kB/s, and during the 5 months of daily checking while we were away; there were no disconnects. The same dl524 router remained in service connected to the 932l.
I am wondering if we should move this discussion/experiments to another thread or medium? I really do not mind helping out here.
Best regards,
Bob
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This thread contains connectivity issue posts moved from the DCS-932L - Firmware v1.04b05 Comments & Observations (http://forums.dlink.com/index.php?topic=50686.0) thread.
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A couple of days have passed, and while I have not observed any disconnects while watching the camera, something a bit strange is happening. I have the 932l on a mechanical timer set to turn off at 4am and turns on about a half hour later. When this happens, it gets a dhcp lease as per normal. However, about 4 hours later it gets another dhcp lease from the router. All this without the router rebooting, since when it does reboot, the logs go away. They did not. So, perhaps the diconnects are happening if one is viewing the camera at the same time as the lease is renewing? I have cleared the log, and will check it again at lunch time tomorrow.
Regards,
Bob
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Good catch. If that is the case I'll add your findings to the FAQ
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I checked today, and again the 932l got a new dhcp lease about 4 hours after the time rebooted it. The router log remained extent throughout this time, indicating that the router remained active. I noted that the ntp time server is set to update the router time at 4 hour intervals. Perhaps this is causing the renewing of the lease. I have changed it to a 24 hour update interval, and will check the log again tomorrow.
A question: does anyone know if the 932l (with the new firmware) is programmed to get a new dhcp lease 4 hours after it is booted? The log indicates that it does not renew EVERY 4 hours, just the 1st 4 hours after boot.
Regards,
Bob
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Ok, it is now three consecutive days that the camera got a new lease about 4 hr and 25 min after the daily reboot. I imagine that could be what is causing the momentary disconnects, but as I do not know dlink's network protocols/habits I suppose one cannot be sure. I do know that when I check the camera via mydlink later in the day, I do not see the disconnects.
As an aside, I notice that the isp is also reassigning an address to the router each day, but that seems to happen at unpredictable times. The next time I am talking to tech support I am going to question them about this. Once a day seems to be over the top.
I will not post to this thread unless I see something change radically. I suppose that since the diconnects are only momentary, and not often daily, they are of little consequence, at least for my purposes.
Thanks to all for your insights and suggestions.
Regards,
Bob
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Any updates on this issue? I've been keeping a closer eye on my DCS-932L and still have yet to see any disconnects after upgrading. ???
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Five cameras, all upgraded and now random disconnects. Only for about 4-5 seconds and then reconnects. Search the logs and there is no apparent pattern. All cameras and hard-wired, have static IP's and connect directly to a GB switch (old school and better reliabilty). These cameras make up a security system, which now I no longer have that warm feeling any more. May have to back the firmware down to a previous version until this is investigated. Monitoring the cameras thru D-ViewCam (the latest version).
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i have faced hell of problems after upgrading to v1.04b05 firmware.the problem are like image goes blank(full black)/image will not be displayed with time displayed on the image screen will be 00:00:00 AM.
lost connectivity problem almost very frequent.
i thought of crushing the cam.but finally i restore to older firm ware version v1.03 b08. now cam works fine so far.
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I applied the firmware update this past weekend and am experiencing lost connectivity as well. I thought it was because I also added a second camera perhaps, but now I'm wondering if it was the firmware. How do you restore to the previous version?
Update---- after posting the above, i figured out how to restore back to the previous FW v1.03. So far, since restoring, my cams have stayed up with no lost connectivity issues. Looking good so far.
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Someone was using the mac to disassociate and eventually got on my wireless network. Check frequently via DHCP on your AP/Router...
They disassociate to make the devices reconnect, and therefore get another handshake to try to crack your encryption code. Make sure to make a long WPA(2) passphrase with TONS of chars, uppercase, lowercase, AND special characters (*!^_@*) such as "$tay0ffMy$+!nk!ngN3+w0rkf001z"
This may be your problem too...