Page 1 of 1

HELP! Clients continously connecting/disconnecting!

Posted: Wed Oct 31, 2007 12:08 am
by Bomber67
Asked this question in another thread without finding any solution, and now I'm getting a little desperate so I try again:

My AP is a RB 333 with rc5, R52 Radio in 2.4 GHz.

I have several old Linksys clients that I need to connect (customers won't spend money on MT CPEs now).

When the AP is running and I reboot the clients they associate all fine with the AP.
When for some reason the clients are disassociated by the AP (change in wireless settings, updating access list, rebooting the AP etc) the clients associate and then de-associate after exactly 20 seconds, then immediately re-associate, disconnect after another 20 seconds and so on...
Some clients stick to the AP after a limited number of attempts but others try again and again maybe for hours.

Here is the log:
22:58:48 wireless,debug wlan2: 00:0F:66:5B:21:07 attempts to associate 
22:58:48 wireless,debug wlan2: 00:0F:66:5B:21:07 in local ACL, accept 
22:58:48 wireless,info 00:0F:66:5B:21:07@wlan2: connected 
22:58:48 wireless,info 00:14:BF:D2:5C:6A@wlan2: disconnected, received disassoc:
 class 3 frame received (7) 
22:58:49 wireless,debug wlan2: 00:14:BF:D2:5C:6A attempts to associate 
22:58:49 wireless,debug wlan2: 00:14:BF:D2:5C:6A in local ACL, accept 
22:58:49 wireless,info 00:14:BF:D2:5C:6A@wlan2: connected 
22:58:50 wireless,info 00:12:17:BC:D0:4F@wlan2: disconnected, received disassoc:
 class 3 frame received (7) 
22:58:51 wireless,debug wlan2: 00:12:17:BC:D0:4F attempts to associate 
22:58:51 wireless,debug wlan2: 00:12:17:BC:D0:4F in local ACL, accept 
22:58:51 wireless,info 00:12:17:BC:D0:4F@wlan2: connected 
22:59:08 wireless,info 00:0F:66:5B:21:07@wlan2: disconnected, received disassoc:
 class 3 frame received (7) 
22:59:09 wireless,debug wlan2: 00:0F:66:5B:21:07 attempts to associate 
22:59:09 wireless,debug wlan2: 00:0F:66:5B:21:07 in local ACL, accept 
22:59:09 wireless,info 00:0F:66:5B:21:07@wlan2: connected 
22:59:09 wireless,info 00:14:BF:D2:5C:6A@wlan2: disconnected, received disassoc:
 class 3 frame received (7) 
22:59:10 wireless,debug wlan2: 00:14:BF:D2:5C:6A attempts to associate 
22:59:10 wireless,debug wlan2: 00:14:BF:D2:5C:6A in local ACL, accept 
22:59:10 wireless,info 00:14:BF:D2:5C:6A@wlan2: connected 
22:59:11 wireless,info 00:12:17:BC:D0:4F@wlan2: disconnected, received disassoc:
I got the tip to increase Hardware retries but that didn't work.

After all, what is this disassoc: class 3 frame received (7) that the clients apparently send, and why do they disconnect?

Linksys clients are Broadcom based and R52 is Atheros, is it likely that these chipsets don't talk very well to eachother?
What can I do about it in ROS?

Help! using rc9 clients disconnect immediately!

Posted: Wed Oct 31, 2007 9:22 am
by Bomber67
Upgraded to rc9 and now it's even worse!

With rc5 the clients stayed associated for 20 seconds, now they disconnect immediately, but without any further error message:
08:10:19 wireless,info 00:14:BF:D2:5C:6A@wlan2: connected 
08:10:20 wireless,debug wlan2: 00:0F:66:5B:21:07 attempts to associate 
08:10:20 wireless,info 00:0F:66:5B:21:07@wlan2: reassociating 
08:10:20 wireless,info 00:0F:66:5B:21:07@wlan2: disconnected, ok 
08:10:20 wireless,debug wlan2: 00:0F:66:5B:21:07 in local ACL, accept 
08:10:20 wireless,info 00:0F:66:5B:21:07@wlan2: connected 
08:10:20 wireless,debug wlan2: 00:12:17:BC:D0:4F attempts to associate 
08:10:20 wireless,info 00:12:17:BC:D0:4F@wlan2: reassociating 
08:10:20 wireless,info 00:12:17:BC:D0:4F@wlan2: disconnected, ok 
08:10:20 wireless,debug wlan2: 00:12:17:BC:D0:4F in local ACL, accept 
08:10:20 wireless,info 00:12:17:BC:D0:4F@wlan2: connected 
08:10:20 wireless,debug wlan2: 00:14:BF:D2:5C:6A attempts to associate 
08:10:20 wireless,info 00:14:BF:D2:5C:6A@wlan2: reassociating 
08:10:20 wireless,info 00:14:BF:D2:5C:6A@wlan2: disconnected, ok 
08:10:20 wireless,debug wlan2: 00:14:BF:D2:5C:6A in local ACL, accept 
08:10:20 wireless,info 00:14:BF:D2:5C:6A@wlan2: connected 
08:10:21 wireless,debug wlan2: 00:0F:66:5B:21:07 attempts to associate 
08:10:21 wireless,info 00:0F:66:5B:21:07@wlan2: reassociating 
08:10:21 wireless,info 00:0F:66:5B:21:07@wlan2: disconnected, ok 
08:10:21 wireless,debug wlan2: 00:0F:66:5B:21:07 in local ACL, accept 
08:10:21 wireless,info 00:0F:66:5B:21:07@wlan2: connected 
08:10:21 wireless,debug wlan2: 00:12:17:BC:D0:4F attempts to associate 
08:10:21 wireless,info 00:12:17:BC:D0:4F@wlan2: reassociating 
08:10:21 wireless,info 00:12:17:BC:D0:4F@wlan2: disconnected, ok 
08:10:21 wireless,debug wlan2: 00:12:17:BC:D0:4F in local ACL, accept 
08:10:21 wireless,info 00:12:17:BC:D0:4F@wlan2: connected 
08:10:21 wireless,debug wlan2: 00:14:BF:D2:5C:6A attempts to associate 
08:10:21 wireless,info 00:14:BF:D2:5C:6A@wlan2: reassociating 
08:10:21 wireless,info 00:14:BF:D2:5C:6A@wlan2: disconnected, ok 
08:10:21 wireless,debug wlan2: 00:14:BF:D2:5C:6A in local ACL, accept 
08:10:21 wireless,info 00:14:BF:D2:5C:6A@wlan2: connected 
08:10:22 wireless,debug wlan2: 00:0F:66:5B:21:07 attempts to associate 
08:10:22 wireless,info 00:0F:66:5B:21:07@wlan2: reassociating 
08:10:22 wireless,info 00:0F:66:5B:21:07@wlan2: disconnected, ok 
08:10:22 wireless,debug wlan2: 00:0F:66:5B:21:07 in local ACL, accept 
08:10:22 wireless,info 00:0F:66:5B:21:07@wlan2: connected 
08:10:22 wireless,debug wlan2: 00:12:17:BC:D0:4F attempts to associate 
08:10:22 wireless,info 00:12:17:BC:D0:4F@wlan2: reassociating 
08:10:22 wireless,info 00:12:17:BC:D0:4F@wlan2: disconnected, ok 
08:10:22 wireless,debug wlan2: 00:12:17:BC:D0:4F in local ACL, accept 
08:10:22 wireless,info 00:12:17:BC:D0:4F@wlan2: connected 
Uldis/Normis, are you there?

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 01, 2007 10:48 am
by Bomber67
*BUMP*

Nobody that have experienced this? :shock:

There must be some kind of workaround to this, parameters that can be changed or something?
Any tips are welcome!

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 01, 2007 11:01 am
by Equis
it could be rf noise.

on a couple try b only (not g)

b is moe stable with high noise

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 01, 2007 11:32 am
by Bomber67
Noise floor is approx -100, I manually picked the clearest channel, i.e. 2452 MHz.
RSSI measurement on clients are between -60 and -78 dBm, noise about -95 dBm.

Same clients with same firmware associated all fine to the old AP, a Linksys WRT54G with a 12 dBi omni which I'm certain was picking up a lot more noise.
Then SNR was as low as 5 for some of the clients, now it is 20 to 35. Most of the clients stay at 48 or 54Mbps once associated.
Current antenna is a 90 dBi sector.

To start re-considering the whole problem:
Is this about the client giving up, or is it thrown out by the AP?

Apparently something is different between rc5 and rc9.
In rc5 clients stayed associated for 20 seconds, then went away with the "disconnected, received disassoc: class 3 frame received (7)" log message. In rc9 they are flashing in for a second or two, and then gone without any other message than "disconnected, ok"

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 01, 2007 12:17 pm
by Equis
I have no idea

Are they in your access list?
What if you try defualt authenticate?

Are you using WEP/WPA perhaps disable this (just to test) to try narrow the problem down

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 01, 2007 12:29 pm
by Bomber67
They are all in my access list, copied there from the registration list (at the time they were all associated after being rebooted).
Have also tried default authenticate, no luck.
Anyway If I disable one of them in the access list (with def.auth. false) they won't show up in the registration list at all.

No encryption enabled.

For my PPPoE server running on another inteface (wlan1) I get pretty detailed log output. Are there any log topics I can enable to get more information about what's going on on this problem interface wlan2?
Topic wireless is enabled but does only output "disconnected, ok ".

Is there a chance that changing my R52 for another card will do the trick?

Re: HELP! Clients continously connecting/disconnecting!

Posted: Wed Nov 14, 2007 8:43 am
by jcremin
I have this same problem. The client is a broadcom chipset (buffalo).... Only variable to change is the upgrade from ROS 2.9 to 3rc10

please help,
Joe

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 15, 2007 12:05 pm
by GWISA
I must say I'm a little wary of v3rcx right now - I had a pretty bad experience replacing a burnt out routerboard with an Intel based mini ITX PC running v3rc6, using the same original wireless cards & hardware as before. Signal strengths were not as good as before, and link quality (CCQ) and throughput dismal.

Changing out the motherboards with RB532's running 2.9.xx fixed the problems...

Unfortunately I was not able to experiment and dig deeper to try and determine the root of the problem, but on the surface it certainly looked as if v3 was the culprit.

I have similar miniITX boards running elsewhere with no problems, but using 2.9.xx. Unfortunately 2.9.xx does not have Ethernet drivers for these boards, so I'm limited to using them only where I don't need Ethernet, or where I only need 1 mini PCI + 1 ethernet...

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 15, 2007 2:43 pm
by tgrand
The clients are failing to see a beacon, so they reattempt to associate, and when they do the ap throws out the already established connection.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Nov 15, 2007 4:50 pm
by GWISA
that could be.... try using the 'sniff' tool and click the 'packets' option - it may give you more to work on...

Re: HELP! Clients continously connecting/disconnecting!

Posted: Wed Nov 21, 2007 8:39 am
by Bomber67

Re: HELP! Clients continously connecting/disconnecting!

Posted: Tue Nov 27, 2007 9:45 pm
by ekkas
I believe this problem was fixed in the 2.9.46 version?

Re: HELP! Clients continously connecting/disconnecting!

Posted: Tue Nov 27, 2007 9:51 pm
by jcremin
The problems are with the 3.0 beta.. 2.xx works fine.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Sat Jan 05, 2008 6:10 pm
by xBenny
Same problem, we need major ROS update. New RBs (RB333 and RB600) are unusable with RC13

Re: HELP! Clients continously connecting/disconnecting!

Posted: Mon Jan 07, 2008 11:09 am
by Bomber67
Same problem, we need major ROS update. New RBs (RB333 and RB600) are unusable with RC13
I stongly disagree with your statement.
My RB333 has been running for 29 days now without problems. 3x R52, one 5GHz and two on 2.4. PPPoE server and firewall.
Initially I had big problems with frequent reboots on rc10. Upgraded to rc13 and upgraded the BIOS, this solved my problems.

I don't know the exact reason for the wireless disconnect issue, but it was solved for me by upgrading the clients (Linksys with Sveasoft).

Re: HELP! Clients continously connecting/disconnecting!

Posted: Tue Jan 08, 2008 6:45 pm
by ejansson
bomber67..

I tried the link you posted but there is no page there, can you tell us what you did.

Erik

Re: HELP! Clients continously connecting/disconnecting!

Posted: Wed Jan 09, 2008 6:25 am
by jwcn
You want to Decrease not Increase the hardware retries.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Wed Jan 09, 2008 2:22 pm
by Bomber67
bomber67..

I tried the link you posted but there is no page there, can you tell us what you did.

Erik
I figured out that upgrading the CPEs to the latest firmware did the trick. The CPEs are Linksys WRT54G (Broadcom) and at that time "latest" meant Talisman 1.3.1.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Thu Jan 17, 2008 3:59 pm
by ambse
Hello Bomber67, hello everybody,

I have exactly the same problem with RB333 with up-to-date firmware and ros 3.0rc14.
I use cpe Linksys WRT54GL with DDwrtV23.sp2 for firmware.
I use WPA / TKIP mode for security.
But with RB532, no problem with V9.3x-->v9.48 and same config for cpe.

What news about your problem, have you got any solution ?

Thanks for your informations.
Regards.

Eric from France.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Fri Feb 01, 2008 5:14 am
by bney
Unfortunately I am still experiencing the same problem running V3.1, So , release 3 didnt fix it.
I have been seeing it only with a combination of Ubiquiti SR/XR2.4 cards running with a client base of Tranzeo CPQ units. I have been changing out the radios in the access points to either Prizm based cards or Mikrotik cards. Not the solution I wanted, but it does stop the customer screaming.

The tranzeo radios are all using either CM9 radios or Z-com radios so I am suspecting some weird chipset incompatibility. Tranzeo denies all. I have not yet spoken to Ubiquiti about this.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Fri Feb 01, 2008 2:42 pm
by uldis
We think it is Tranzeo problem.
Is it working fine in v2.9?
The only way how to check where is the problem, is when someone could provide us with such unit and a way how to reproduce it, then we could look if we could find a workaround...

Re: HELP! Clients continously connecting/disconnecting!

Posted: Fri Feb 01, 2008 7:06 pm
by bney
It happens under all versions of ROS I have tried. 2.9 and 3.0,1

Re: HELP! Clients continously connecting/disconnecting!

Posted: Fri Feb 01, 2008 7:29 pm
by nexus010
Hi,
I'm was planing to improve my WISP network with MT.
I just purchased 4 x RB 333 one week ago they came equiped with ROS 3.RC10 an imediatlly upgraded to ROS Ver 3.1.this was done by my certified reseller who also took the time to show me the ropes with MT.

This is to replace existing equipment and expand my service area and service quality. I plan(ed) to replace most of my bachaul and AP's with MT gear.
Then all of my future customers to MT based on RB/411 .
I know well enough from experience not to put new equipment into production without extensive tests.

I have SR2, SR5 and XR9 cards for various duties.
I have succsefully tested to my satisfaction the SR5 and XR9.
They are working properly and in the case of the SR5 interoperting perfectly (900 mhz via XR9's are new addition to my network).

I'm having significant problems with the SR2 connecting to my existing Client radio's.
My Client devices are mainly 8186 like other's have said "inexpensive good performer." (AProuter firmware 5.3b-en and 6.1-en)
Also some senao 2611's and a few openwrt wrt54gs's.
I have also tried 3 laptop cards 2 usb adapters all with the same results.


My current Access points are Atheros based SMC Enteprise units SMC2888W-AG high capacity and 8186 based equipment. I have been running this for 4 years.
No interoperability problems.
My tests have run over short distances long distance and encryption on and off hardware retries set from 1 to 9.
Ack from indoors to dynamic.
Power is set to default and both clients and AP's show no low power or high power issues in thier respective interfaces.

Devices show up in registration, are copied to access list ,forwarding is allowed.
I get very brief connections.The log file from 8186 indicates "Access point has deauthenticated"
Log in MT says "data from unknown device "mac adrees" set deauth"
I have checked that "default forwarding" and "default authentication" are enabled.
Tried pre and post ros 2.9.25 setting

This problem seems to be affecting many more Mikrotik customers than just myself.
I have read all of the recent ,relevant posts tried all the advice offered before posting myself. I have worked on this for 7 days straight now about 12 hours each day.
I don't have any older routerboards to compare and the RB333 can't be downgraded to pre 3.
I'm ready to go buy a an RB532/a with an eariler ROS just to determne if that is the problem once and for all but it is more money and time wasted if the problem is an OS issue soon to be fixed.
Does anyone know if Mikrotik acknowledges this as a ROS revision problem ?
Is the problem being addressed ?
If is not a ROS, what is the issue and therefore the correct procedure to impliment ?
I cannot move these MT based radios into production if there is no solution.
I have over 100+ customers based on Reatek 8186, trading their gear is not an option and there is no firmware upgrade.

Thank you.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Fri Feb 01, 2008 9:46 pm
by esn.toolz
Where are you from?? I can Help you.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Sat Feb 02, 2008 12:18 am
by nexus010
Western Quebec just outside Ottawa.
Any help would be appreciated !

Re: HELP! Clients continously connecting/disconnecting!

Posted: Sun Feb 03, 2008 1:09 pm
by Alessio Garavano
Where are you from?? I can Help you.
Your help is based in MT solution? can you help all the people with theses problems in the forum?

Thanks and regards!

More evidense of an underlying ROS issue.

Posted: Mon Feb 04, 2008 5:07 pm
by nexus010
On Saturday I saw the ROS 3.2 release and promtly downloaded/installed into my test systems.
There is a marked improvement in connectivity.However large issues remain.
I managed to get connecton and data to move with all of my test client equipment.
(read previous post)
The laptops and client radios all registering and remaining registered.
However. there where large amounts of packet loss and eventually data transfer for every client device ground to a halt. Never was the throughput "fast" 100kbit was the best score,
but that was a peak and with packet loss it rapidly deminished to 30kbit .
As I had no ability to move data previously other than about half a page load and there is has been a significant improvement with no other changes made than the upgrade from ROS 3.1 to 3.2 it is definitive for me that there is a problem with ROS 3.x. at least on an RB-333 with SR2's
I think we should be counting this as ROS 3 rc12 this is still very much a beta product and certainly not ready for production enviroments with an SR2, which is a mainstay in this industry.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Mon Feb 04, 2008 6:15 pm
by gmeyer
I have the same problem as nexus010 with RB333 + ubiquiti XR5 and still waiting for a solution

Re: HELP! Clients continously connecting/disconnecting!

Posted: Mon Feb 04, 2008 8:03 pm
by nexus010
That is noteworthy gmeyer because I'm not having problems with the SR5.
I would have bought the XR5 but my supplier was out of stock.
I can confirm that the XR9 seems to be working but I have put more focus on the SR2 issue as it is is more central to my existing network.
I will certainly be taking a much closer look at both SR5 and XR9 funtionality before I deploy.
We all know Mikrotik has a good reputation but for me, with this being my first investment of money and time it is certainly disappointing.
All my other equipment with few exceptions has been plug and play.
I certainly don't have the time for this nor can I afford to throw capital out the window.
After all the reading I have done in all of the posts I can't see how this can even begin to be trusted.
How am I supposed to take down a mast and go through all the changes necassary to put this in prodution for 20 clients when I can't get "normal" conditions for one. Ireally feel to those guys out there who have customers calling them everydday wondering when the are going to get there service back. It is the worst feeling for a provider.
So many wisps have upgraded existing proven installs and had them fail only to be told "maybe it's interference" or "check your coax maybe its wet" or "well your running poor client equipment you should replace it" or " you need to spend more time reading the doucumentation.
This is poor form and very insulting I'm sure. (it hasn't happened to me yet but I have read these posts with ernest as I'm trying to solve the same problem)
Openess with these issues would support dialog and resolution.
Instead it seems there is this constant superior attitude to mask the truth.................... it's not working right just yet.
I'm sure it will.
But for now I would say to any wisp out there don't upgrade if it's working.....

Re: HELP! Clients continously connecting/disconnecting!

Posted: Tue Feb 05, 2008 3:15 am
by bney
My solution has been to stick with the trusty NL2511 and 500mw amps. I already have a large supply of the amps from my Lucent AP days so I dont have to go buy a bunch of those. Seems to work well. Just doesnt have G mode or the other little things that make the Atheros cards attractive. Once the problem finally gets figured out, I can go back through and to the XR2 updates I was planing on.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Tue Feb 05, 2008 4:06 am
by jwcn
Wow.

I guess to moral of this story is amps make everything all better.

This is why we have spectrums full of noise.

Re: HELP! Clients continously connecting/disconnecting!

Posted: Tue Feb 05, 2008 3:29 pm
by ekkas
I agree with nexuS010

Re: HELP! Clients continously connecting/disconnecting!

Posted: Wed Feb 06, 2008 4:49 am
by rodneal
I had the same problem for a year and a half. - Solution - MT came out with .46 (solved the disconnects) and I discovered that the UB chipsets would go deaf after a while (solved the no-connects) - UB replaced all my SR for XR and I upgraded to .46 (.50) works great too - I haven't had that problem since - unless I was running G mode and I had a WDS connection on the same interface. Solution - go to B mode and qualify the signal strength.
I'm running 3.2 now and I feel that it is an improvement over the .46+ versions that where working so good. (don't use 5.8 freq 5785)
I use strickly Routerboards and UB cards for their sensitivity.
I've found that AMPs increase the enviromental noise - so I prefer a card that gives me max power and max sensitivity with basic filering built in solution.
Hope this helps.
Rod

Re: HELP! Clients continously connecting/disconnecting!

Posted: Wed Feb 06, 2008 6:37 am
by nexus010
Hi Rodneal speaking for my self this helps a lot.
The only issue I can see here is whether my supplier will be able to swap my SR's for XR's.
So far I only have the 4, enough to test and tentativly push into production.

Anyway that was the ray of light I was looking for.
Cheers!