Mesh Access Poits Disappearing

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.

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.

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Hello Sandeep.
I already added the MAC address to the filter.
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sh version
Cisco IOS Software, C1530 Software (ap1g3-K9W8-M), Version 15.2(4)JB3b, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 23-Jan-14 21:52 by prod_rel_team
ROM: Bootstrap program is C1530 boot loader
BOOTLDR: C1530 Boot Loader (ap1g3-BOOT-M) Version 15.2(4)JB3b, RELEASE SOFTWARE (fc1)
AP78da.6e60.8a72 uptime is 3 minutes
System returned to ROM by power-on
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Last reload reason: Reload
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
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[email protected].
cisco AIR-CAP1532I-E-K9 (MIPS74k) processor (revision 28) with 204800K/57344K bytes of memory.
Processor board ID FCZ1825H059
MIPS74k CPU at 700Mhz, revision number 0x0000
Last reset from power-on
LWAPP image version 7.6.95.12
2 Gigabit Ethernet interfaces
2 802.11 Radios
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 78:DA:6E:60:8A:72
Part Number : 74-11942-01
PCA Assembly Number : 000-00000-00
PCA Revision Number :
PCB Serial Number : FOC182280HQ
Top Assembly Part Number : 000-00000-00
Top Assembly Serial Number : FCZ1825H059
Top Revision Number : 23
Product/Model Number : AIR-CAP1532I-E-K9
Configuration register is 0xF
sh sysinfo
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 7.6.120.0
Bootloader Version............................... 1.0.16
Field Recovery Image Version..................... 7.0.112.21
Firmware Version................................. FPGA 1.7, Env 1.8, USB console 2.2
Build Type....................................... DATA + WPS
System Name...................................... XX
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.1069
Redundancy Mode.................................. SSO (Both AP and Client SSO)
IP Address....................................... XX
Last Reset....................................... Software reset
System Up Time................................... 10 days 1 hrs 7 mins 54 secs
System Timezone Location......................... (GMT +1:00) Amsterdam, Berlin, Rome, Vienna
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180
Configured Country............................... Multiple Countries:AT,BG,BR,CH,CN,CZ,DE,DK,FI,FR,GB,HK,IT,JP,KR,NL,NO,PL,SE,SK
--More-- or (q)uit
Operating Environment............................ Commercial (0 to 40 C)
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +27 C
External Temperature............................. +22 C
Fan Status....................................... OK
State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 15
Number of Active Clients......................... 563
Burned-in MAC Address............................ 2C:54:2D:72:60:C0
Power Supply 1................................... Present, OK
Power Supply 2................................... Absent
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Sven

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I have few questions for mesh network:
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1-
Parent: the root AP that other APs connect to as a child.
Child: the AP that reaches controller through another AP (through the parent AP).
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3- Gain is put in order to maintain power levels set by authority. leaving it blank may make the ap exceed the power threshold specified by the authorities. You need to specify the accurate gain under the antenna (for external antennas only).
4- You need to set the gain under both b/g and a radios. each radio may have different transmit power and different antenna gains.
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Subject: FlexConnect compatibility with Access Point

Subject: FlexConnect compatibility with Access Point
Summary: Hi,
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Note All features discussed in this chapter apply to indoor (1040, 1140, 1250, 1260, 3500) and outdoor mesh access points (1500 series) unless noted otherwise. Mesh access point or MAP is hereafter used to refer to both indoor and outdoor mesh access points.
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