Mesh Access Poits Disappearing

michaelgitonga · ‎02-22-2010

Hi.

We have installed 20 mesh access points (x16=1522AG, 1131AG) controlled by 4402 Wireless LAN Controller (WLC) version 5.2. The network is currently up and running. The problem is that some access points disappear from the controller and then reappear. I captured some message logs in the WLC shown below:

5 Fri Feb 19 11:55:53 2010 Mesh child node '00:26:0a:39:65:0f' is no longer associated with mesh node '00:26:0a:38:6e:00'.

6 Fri Feb 19 11:55:46 2010 Interference Profile Updated to Pass for Base Radio MAC: 00:26:0a:38:5b:00 and slotNo: 0

7 Fri Feb 19 11:55:29 2010 AP Disassociated. Base Radio MAC:00:26:0a:39:65:00

8 Fri Feb 19 11:55:29 2010 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:26:0a:39:65:00 Cause=Heartbeat Timeout

9 Fri Feb 19 11:55:29 2010 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:26:0a:39:65:00 Cause=Heartbeat Timeout

The Mesh access point above is a Mesh Access Point (MAP).

Someone pliz explain the logs or the intermittent disappearance of the Access Points.

michaelgitonga · ‎02-22-2010

CORRECTION! - The mesh access point is a Root Access Point (RAP)

Leo Laohoo · ‎02-22-2010

Hold on ... you have mesh APs and you are running non-mesh firmware. Is this correct?

michaelgitonga · ‎02-22-2010

Hi,

I believe this is correct.

The Cisco Wireless LAN Controller Configuration Guide, Release 5.2 states the following:

Controller software release 5.2 supports these Cisco Aironet mesh access points:
• Cisco Aironet 1520 series outdoor mesh access points – Cisco 1520 Series consists of the 1522 dual-radio mesh access point and the 1524 multi-radio

mesh access point.

• Cisco Aironet 1130AG and 1240AG series indoor mesh access points

The setup is already working and users are able to connect to the internet etc. Only that some mesh access points keep disappearing...but not for long periods of time.

Leo Laohoo · ‎02-23-2010

I'd stay away from 5.x firmware. Upgrade to 6.0.182.0 or later.

michaelgitonga · ‎02-23-2010

Hi,

See below more messages from the 'Monitor' page of the WLC after one acces point disappeared

200	Tue Feb 23 15:06:50 2010	AP Disassociated. Base Radio MAC:00:26:51:5d:35:00
201	Tue Feb 23 15:06:50 2010	AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:26:51:5d:35:00 Cause=Heartbeat Timeout
202	Tue Feb 23 15:06:50 2010	AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:26:51:5d:35:00 Cause=Heartbeat Timeout

Any idea of the meaning of this?

Leo Laohoo · ‎02-23-2010

Ok ... that's a good clue. I've seen this error messages before when I was using 5.X firmware. My AP's radio would periodically drop out/in and I didn't know what was going on. By chance I upgraded the firmware to 6.0.182.0 and I never saw the errors again. May I recommend you upgrade to 6.0.182.0 or later and verify?