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[brooksthepro]

We have 6 of these AP's in 3 different offices.  One office with 3, one office with 2 and one office with 1.

We seem to be having the most problems with the office with 3 AP's. Sometimes every day, sometimes every couple hours, at least one of the AP's stops working.  Devices can still connect to it, but they just get a 169 IP, they will never get a local IP.  Sometimes though, if I set the client IP to static I can then connect, but not always.  When an AP is having an issue sometimes I can't access the web GUI as well, it just times out.  I then have to powercycle the AP and it will work again for another couple hours or sometimes a day then it drops again.  I have tried adding static ARP entries and static IP assignment in our Sonicwall, same problem.  Our Sonicwall handles DHCP.

When I first installed these in our office they worked fine for a couple months, now I am having this issue and its driving me crazy.  I have been on the phone with DLINK business support, we have tried changing the channels around, turning encryption on and off, change the signal power, update to the latest firmware, downgrade to the previous firmware.  I have tried just using one router instead of all 3, same problem.  I have tried resetting back to factory settings, same problem. 

The other two offices dont seem to have as many issues, they will go for a few days before they get the same issue, sometimes a couple weeks.  But I always end up getting a call and having to reset them at some point during the week.

All offices have Sonicwall's and we VPN to all the offices.  I have spoken with sonicwall and as far as they can see there is nothing in the sonicwall that could cause a problem like this.

I also just added a bonjour print service for iOS printing called Fingerprint on the network, not sure if that would cause any issue. 

Again, I have spoken with the DLink business support but the only solution they could give me is to RMA the AP's.  I am not convinced this will solve the problem, since it isnt just one device that is having the problem.

Any help would be greatly appreciated.  Thanks.

[FurryNutz]

What wireless modes are you using? Under Setup/Wireless/Manual.
Try single mode G or N or mixed G and N?
Channel Width set for Auto 20/40Mhz or try 20Mhz only.
Try setting a manual channel to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear. Ensure each AP is on a different channel.

Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many?

I would start with turning OFF 2 of the 3 APs and test to see if one works for a while, then switch to the other one until the 3rd one is tested with out the other APs going. See if any one of them exhibits this problem. Then I would turn on 2 AP and test to see if the problem presents again. Then the 3rd. Might help narrow down if there is a particular unit exhibiting this problem or if just using 1 AP while testing works.

Possible environment interference or could be HW related. IF you find that one particular AP exhibits the problem, I would move it to the other office and see if the problem follows, if it does, then you'll know it needs to be RMAd.

Keep us posted.

[brooksthepro]

Currently we are using Mixed N G and B.
Channel Width is set to Auto 20/40mhz
I am using channels 1,6,11
There are many networks detected on InSSIDer but the only strong signal close to us is using channel 6.

I will do what you suggest and see if it makes a difference, its just frustrating/hard to troubleshoot because it takes so long before it acts up again to know if changes I made, made a difference.  So it will probably take some time before I can try all of your suggestions.  I will try all of them and let you know my results.

[FurryNutz]

If there are many networks near by, be aware they can impact and be a cause of interference. Everyone is trying to use a open and clear channel. And only having 11 available, might be running into others. I call this WiFi congestion.  

[trumanp]

I've been experiencing the same problems with some of our DAP-2553's.

One setting that I can't change to match your suggestion with the current firmware is the G-N-B settings. On my current AP's the only options are: 

Mixed N-G-B
Mixed G-B
N Only

N Only isn't going to work for us, and when trying the other two settings doesn't appear to make a difference. It takes about a day or so, but then we need to reboot the AP's to make them accept clients. On the upsite, the current firmware, 1.25 does allow you to reboot from the GUI and doesn't require a hard power reset anymore like 1.21 and prior firmware did.

DLink really needs to address this AP and get the firmware issues resolved.

[FurryNutz]

Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many?

What region are you located?

I've been experiencing the same problems with some of our DAP-2553's.

One setting that I can't change to match your suggestion with the current firmware is the G-N-B settings. On my current AP's the only options are: 

Mixed N-G-B
Mixed G-B
N Only

N Only isn't going to work for us, and when trying the other two settings doesn't appear to make a difference. It takes about a day or so, but then we need to reboot the AP's to make them accept clients. On the upsite, the current firmware, 1.25 does allow you to reboot from the GUI and doesn't require a hard power reset anymore like 1.21 and prior firmware did.

DLink really needs to address this AP and get the firmware issues resolved.

[trumanp]

We're out of town a bit, no close neighbors to our facility so that eliminates cross contamination from other AP's.

We're a little southeast of Toledo Ohio.

[FurryNutz]

Any cordless house phones?

I might suggest contacting DLink support, level 2 on the phone and see if there is any additional help. Been some cases there needs to be an RMA done.

[bradmoose]

I know this thread is a little older but EXACT same issue, did you ever get it resolved??

Thanks
Brad

[FurryNutz]

Could you answer some of the questions posted in relay #1?

I know this thread is a little older but EXACT same issue, did you ever get it resolved??

Thanks
Brad

[bradmoose]

only one ap, connected to a dfl-260E running as the dhcp and dns server.

20mhz only, CH 11 (checked insider and ch11 is pretty clear in area), Mixed B, G, N, WPA Personal, this is second unit in this environment to do this, this unit is fresh from RMA dept with FW 1.26. Have already talked to tier 3 support and they don't have any "ideas" of the cause.  Funny thing is I have these units working together at other sites NO problem..

[FurryNutz]

Others site have same FW and configuration settings?

Would be a good test to swap this unit into place at one of the other sites and test to see if the problem follows.

Try single mode G or N or mixed G and N if B mode isn't needed.

[bradmoose]

can not do the swap, the other sites are separate business's. BUt they use a windows dhcp/dns unlike this one that uses the DFL. I do have a DIR-130 with a DAP-2553 at home that works just fine.  Dosnt make sense. the units remain connected just no net ability.

[FurryNutz]

Can you test this one at home to see?

Need to see if this unit works in a different area and if the problem follows. This could be environment related...

[bradmoose]

will do tomorrow , and post results.

Brad