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AP periodically dropping his connection to WLC

Hello ,

I have problem with AP 1262 witch periodically lose his connection to the controller.

I have this situatuion. One WLC 5508 and two 1242 dual band controller based APs.One AP 1242 is connected to the controller through fiber link.The other AP1242 is connected to WLC through first AP on 5GHz Wireless Backhaul.First one is RootAP and second one is MeshAP.WIreless link between two APs have SNR=40dB and distance is no more than 30 metres(100 feet).Antennas used in this case is directioanl 5GHz "AIR-ANT5160NP-R" with gain 6dBi.

MeshAP have an IP and have alreaday downloaded IOS image and configuration from WLC. MeshAP is working fine when he si connected with WLC , and client can gain access two WLAN.

However the MeshAP is periodically dropping his connection to WLC.(once every 4-5 hours).

This is part of the log generated by the WLC before loosing connection with MeshAP:

*apfReceiveTask: Dec 01 10:41:08.199: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Dec 01 10:37:54.022: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Dec 01 08:47:30.943: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Dec 01 08:43:56.610: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Dec 01 07:28:50.498: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Dec 01 07:25:38.994: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Dec 01 06:28:26.299: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Dec 01 06:25:02.186: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Dec 01 00:07:47.769: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Dec 01 00:04:39.750: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Nov 30 17:05:40.975: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Nov 30 17:02:23.102: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Nov 30 07:08:58.755: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Nov 30 07:05:28.818: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Nov 30 04:09:30.046: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

*spamApTask1: Nov 30 04:06:12.370: %CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5416 Did not receive heartbeat reply; AP: 00:08:30:70:97:70

*apfReceiveTask: Nov 29 19:04:58.763: %RRM-3-RRM_LOGMSG: rrmChanUtils.c:290 RRM LOG: Airewave Director: Could not find valid channel lists for 802.11bg

Any help would be appreciated.Thanks in advance.

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3 REPLIES
Hall of Fame Super Gold

AP periodically dropping his connection to WLC

Why are you using 802.11a as a backhaul?  802.11a may have the speed but the range of the 802.11a is not good.  Now you said that you are using the 5060NP-R antenna on the 1260 side, now what antenna is being used by the RootAP?

AP periodically dropping his connection to WLC

Both APs are with identical directional antennas "AIR-ANT5160NP-R".

Hall of Fame Super Gold

AP periodically dropping his connection to WLC

5160NP is NOT a directional antenna.

Again,  why are you using 802.11a as a backhaul?  802.11a may have the speed but the range of the 802.11a is not good.

If you want range, then 2.4Ghz.

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