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Author Topic: Avaya AP's flapping  (Read 3944 times)

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Offline mhtrainor

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Avaya AP's flapping
« on: September 19, 2013, 01:34:11 PM »
Hi folks,

I have an Avaya Wireless deployment using the following;
One WC8180 HW:04 FW:1.0.2.0 SW:v1.2.0.075
Several AP8120 SW:1.2.0.75

My installation has been running flawlessly for many months but recently I've found myself needing to reset AP's becasue of intermittent connectivity.
For no apparent reason, the wireless connection to clients will drop completely and then come back on it's own.  Monitoring over a 24 hr period reveals that the AP seems to "flap" for no reason.  Resetting the AP manually (POE bump) seems to resolve the issue but I don't know for how long yet and I am somewhat concerned.

Am I starting to see signs of problems to come?  Do I maybe just have a couple of bad AP's?  I should mention that the POE switches that the AP's connect to show no signs of trouble.

Comments welcome and thanks,
Matt


Offline TankII

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Re: Avaya AP's flapping
« Reply #1 on: September 23, 2013, 03:02:48 PM »
Verify you are running On-Line double-conversion UPS power.
There was a thread a while back about how power affects POE midplanes on certain switches.

TankII

Offline Charles

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Re: Avaya AP's flapping
« Reply #2 on: October 17, 2013, 07:50:12 AM »
What hardware revision are the AP's having trouble?  The reason I ask is if you have rev 3 there is a known manufacture defect in the hardware (I believe it was a thermistor) that would overheat and cause the AP to fail, hard resetting would sometimes fix the issue but eventually it would fail all together.  To my knowledge Avaya is replacing all rev 3 access points with rev 6's & 7's due to this issue, I just finished replacing all 600 ap's we have in my school district and haven't noticed the problem reoccurring (fingers crossed).

Offline mhtrainor

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Re: Avaya AP's flapping
« Reply #3 on: October 17, 2013, 09:17:40 AM »
@ Charles ..
Thanks for the tip re HW revision.  I checked some of my AP's and I am already at Rev 6.  You had me all excited though for a simple fix.  I continue to see AP "fade-outs" or "flaps" but have not yet nailed down the cause.  My go forward plan is to do a sw upgrade soon and monitor for any stability improvements.

Offline Charles

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Re: Avaya AP's flapping
« Reply #4 on: October 17, 2013, 10:43:30 AM »
Sorry for giving false hope for an easy fix, I've been going thru a nighmare on this AP replacement for my school district right now.  When I spoke with my sales engineer and he said that the 2.1 code for the controller is the most stable he has seen, I'm currently running the 2.0 code and its been really stable for me.  Did have one issue where a group of AP's started connecting and disconnecting for no apparent reason, ended up doing a hard reset on the controller and its been solid since (knock on wood).  I'll send an email to my sales engineer and see if he has seen any issues like what you've been having.

Offline PieterHattingh

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Re: Avaya AP's flapping
« Reply #5 on: November 01, 2013, 06:13:36 AM »
I can also confirm that 2.1 is very stable.
We were running on older versions and had some issues now and then but with 2.1 most of them have gone.

I would really recommend going to this version.

Offline mhtrainor

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Re: Avaya AP's flapping
« Reply #6 on: November 13, 2013, 08:22:34 AM »
I thought I would provide a quick update.  Last week we upgraded to v2.1.  So far we have seen none of the annoying intermittent connectivity issues that our users were previously experiencing (so far so good).  It was a painless upgrade.
Matt