Control message maximal retransmission limit reached and AP SUNWELL failed.

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evelazquez
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2015/07/28 20:06:49 (permalink) 5.2
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Control message maximal retransmission limit reached and AP SUNWELL failed.

We have many disconnections of the FortiAp 222B with its controller (Fortigate 500D). The event message is the next:
- Control message maximal retransmission limit reached
You can see the event in the next image:


We have more FortiAp in the same network working well
Has Someone had this error and know the solution?
 
 

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#1
gschmitt
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Re: Control message maximal retransmission limit reached and AP SUNWELL failed. 2015/07/29 23:21:35 (permalink)
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Is it possible that one of your APs is called Sunwell? 
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evelazquez
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Re: Control message maximal retransmission limit reached and AP SUNWELL failed. 2015/07/30 07:43:38 (permalink)
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Yes, the name of the FortiAP 222B is SUNWELL.
Sorry but not be clear about that.
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gschmitt
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Re: Control message maximal retransmission limit reached and AP SUNWELL failed. 2015/07/31 03:01:26 (permalink)
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Could you try connecting Sunwell to your fortigate directly just to make sure this isn't an issue in the existing infrastructure between the two?
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Sumanth_FTNT
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Re: Control message maximal retransmission limit reached and AP SUNWELL failed. 2015/08/18 10:41:46 (permalink)
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Is this AP connected directly or remotely ?
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yferreira
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Re: Control message maximal retransmission limit reached and AP SUNWELL failed. 2015/09/24 09:37:12 (permalink)
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I had the same problem.
And the problem was solved disabling "Spectrum Analysis" feature.
We had 2 choices. Disable or fine tune. In my case, I'm not using "Rogue AP" and then I disabled that.
 
FortiOS Handbook for FortiOS 5.2

During heavy AP traffic, it is possible for Spectrum Analysis background scanning to cause lost packets when the
radio switches to monitoring. To reduce the probability of lost packets, you can set the CLI ap-bgscan-idle
field to delay the switch to monitoring until the AP has been idle for a specified period. This means that heavy AP
traffic may slow background scanning.
The following CLI example configures default background rogue scanning operation except that it sets apbgscan-
idle to require 100ms of AP inactivity before scanning the next channel.
config wireless-controller wtp-profile
edit ourprofile
config radio-1
set wids-profile ourwidsprofile
set spectrum-analysis enable
end
end
config wireless-controller wids-profile
edit ourwidsprofile
set ap-scan enable
set rogue-scan enable
set ap-bgscan-period 300
set ap-bgscan-intv 1
set ap-bgscan-duration 20
set ap-bgscan-idle 100
end

#6
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