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[mikehammer]

I bought my Dlink 825 a few months back. It is a RevA modell and I have the latest firmware (1.12A) installed. All 4 wired ports are used (1 for my PC, 1 for SlingLink Powerline, 1 for my VoiP Lingo phone service and 1 for my NAS). In addition 4 PCs are using the wireless features.

For a few weeks now I keep loosing the connection from the Router to my comcast cable modem to the extend that I cannot even logon to the admin console of the Dlink router to reset the connection. The only way to get my connection back to work is to unplug the dlink router, wait 30 seconds and turn it on again.

Not real happy about this.

Any suggestions?

[cprail1_dl]

Mike, not that it helps but I've started noticing exactly this same behaviour in the last week. I'm having to power cycle my 825 (RevA) manually every day or so. I also notice that most existing connections stay up as it degrades but internet sessions start randomly timing out - not dying, as a refresh brings back the page, but seriously degraded.

I did upgrade to 1.12NA recently and although I didn't notice this issue immediately concurent to that event I'll look into downgrading and rebuilding if the forums don't have any solutions/suggestions.

The inability to log onto the router admin itself is particularly annoying - but I can happily bring up the admin on another Dlink on the network (a DIR-655 that's simply an AP) which tells me the network's still functioning locally. If worse come to worse I'll swap their roles. Both have unique addresses of course.

-Update-
Looking through the other threads with similar symptoms this seems to be the 'lock up' issue that has haunted Dir-825 uses for some time. The fact that I've only JUST started experiencing it (Sept09) must tell me something but as I've not changed the config I don't know what. The issue existed , according to these threads, when using my original firmware although I didn't experience it.

[mikehammer]

Thanks mate,

although it won't fix my problem it's good to know that I'm not alone. Hopefully dlink comes up with a fix. I switched to Dlink from a Linksys 160N and although I don't want to go back I wonder if there is a Gigabit N router out there that 'just works'.

[chris_cesar]

Did you try locked the WAN port speed to 10Mbps if that makes any difference?

[mikehammer]

Did you try locked the WAN port speed to 10Mbps if that makes any difference?

Thanks for the tip. Trying now and will report back here should it fix my problem. Would be a shame if this is the cause because I have 15Mbit/s download speed.

[synthtek]

I just experienced the same issue.  I had to hard reboot the router, and it is only about two months old.

Any one at Dlink paying attention?

J

[holmes4]

This is a common problem with the Rev A 825 and the 655.  It is a bug introduced by the 1.11NA firmware and appears to be related to a DNS table overflow.  Disabling "DNS Relay" fixed the problem for me, but this disables what I consider to be a major feature of the router.  D-Link apparently knows of the problem but has not fixed it yet.

[mikehammer]

This is a common problem with the Rev A 825 and the 655.  It is a bug introduced by the 1.11NA firmware and appears to be related to a DNS table overflow.  Disabling "DNS Relay" fixed the problem for me, but this disables what I consider to be a major feature of the router.  D-Link apparently knows of the problem but has not fixed it yet.

Thanks, another tip I'll try. I'm not an expert - what functionality will I loose if I disable DNS relay?

[cprail1_dl]

Mike et al, I'll give the disable DNS Relay a try myself and let you know if it helps.

Mike - to answer your "what is DNS relay and do I care" question - my understanding is that with DNS Relay enabled, when one of your computers/clients requests a page from a site it's not recently visited, the 825 router remembers the remote DNS server's response (the translation from url to ip address) so that the next time your computer/client asks for that same url, the router can do the translation locally instead.
 The advantage is lower delay when accessing that url, at least until it drops out of the cache. Additionally if anyone on your LAN accesses that url, everyone on your LAN accessing the same url benefits from the quicker translation.

[UPDATE - Oct 5 - After disabling DNS relay my 825 has stayed up , and working, for 3 days now. Somewhat of a record with the recent trouble. So this did help although for others reading this thread, bear in mind that my 825 HAS a previous history of running fine/stable and did so with DNS relay enabled. - i.e. disabling seems to have helped the problem but DNS relay doesn't explain why it started happening in the first place.
cheers, Peter

[jmqrsq]

Ihave the A1 revision 825 and started having this exact problem after upgrading my firmware to the 1.12NA version for the sharepoint functionality. I am power cycling every day or two and it sucks. I have tried to disable the DNS relay as mentioned in other forum threads but I am not sure what that all means for my wireless computers throughout my house. For example when I unchecked the option for the DNS relay and saved my Airport Express suddenly wanted me to manually put in my DNS. How do I know what this is? Will I need to do this for all my wireless devices and if so is it a set it once kind of thing or will I need to repeatedly need to do this?

It really sucks I decided to try to use the sharepoint USB thing because my router was perfect before this upgrade and now of course it cannot be downgraded to the stable 1.01 frimware. C'mon D-Link help us all out as it appears this issue has been around for a few months.

[ReggieBR09]

Bought my DIR-825 (version A) in June 2009. Did the 1.11NA firmware update when I got it (stupid me). Wired connection has always been good, wireless connection has been an on-going headache with the connection often dropping out. Firmware1.12NA fixed nothing, still have to deactivate most options to even get it to work. Video streaming on my Samsung Blu-Ray Player would often freeze within 10 minutes into a video...within 20 minutes into mp3 music.  Could never get a new DWA-552 adapter to work properly with the router.  My old Linksys card (G) was far more stable with it, but still need to re-set the router every 2 to 4 days.  Anyway, 1 week ago the transmitter on the DIR-825 finally conked out completely (only 3 months old!).  I needed something quickly so picked up a TRENDNet TEW832BRP from Costco (half the price of the DIR-825).  Guess what...everything is now working! Watched 3 movies through wireless streaming to the Blu-ray...not a single connection drop. DWA-552 is working great with 300 MBPS connection. Seven days later and not one single reset or connection drop! Perhaps my DIR-825 was a lemon...but from what I read in this forum I'm starting to think that alot of the problems reported are simply due to bad hardware, not bad firmware....

[mikehammer]

Rebooted the router the last time on Sunday - unchecked DNS Relay and selected 10Mbit speed to the cable modem (changed from autoselect).

Today, Tuesday Router still works. Will report back end of the week (or earlier if the freeze problems occur again).

[isamarch]

I also have the "Rev. A" hardware and have been experiencing this issue ever since 1.11NA.  My problem is that I also have a switch (D-Link DGS-2205) and every time I disable the "DNS Relay" option I can't connect from the computers connected to the switch.  Is there any way around this?

[kenargo]

I also have the "Rev. A" hardware and have been experiencing this issue ever since 1.11NA.  My problem is that I also have a switch (D-Link DGS-2205) and every time I disable the "DNS Relay" option I can't connect from the computers connected to the switch.  Is there any way around this?

If you disable DNS relay then you may need to manually set the Primary DNS addresses on the switch; I found I had a simular issue with an internal device.

[se2k]

I have had this problem with my DIR-825 since I first got it, and my router shipped with 1.01 firmware.  It has followed me from 1.01 to 1.11 and 1.12NA.  It has REALLY pissed me off since this router is suppose to be a higher end home router.

I have had this router for 6 months now and it's ABSOLUTELY RIDICULOUS that D-Link has not fixed this issue yet.  I have patiently waited through two firmware revisions for this to be fixed and still nothing.  I've always used and recommended D-Link products, but this has really caused me to lose my faith.