10-03-2008 02:40 AM - edited 07-03-2021 04:33 PM
Hi,
I've a Cisco WLC running version 4.2, I've strange disconnections of some LWAPP access points.From the logs i can see the following message: Fri Oct 3 11:16:39 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:54:ec:db:e0 Cause=Heartbeat Timeout.
Looking on the Cisco website I can't find anything.Can someone help me about this issue?
Regards,
Fabio
10-09-2008 08:23 AM
It seems like that the WLC sends an access request, but there is no response from the IAS server. Complete these steps in order to troubleshoot the problem:
Check and verify the IAS server configuration. and
Check the log file.
Install software, such as Ethereal, which can give you authentication details.
Stop and start the IAS service.
10-13-2008 11:57 AM
This is not an IAS issue. The heartbeat is a packet sent on occasion from the WLC management interface to the AP. If the AP doesn't get this reply in a timeley manner it steps up the speed between heartbeats to make sure it didn't accidently miss one. If it still doesn't hear the reply it assumes it has lost the controller and reboots to LWAPP discovery mode. It sounds like you have a connection issue between the AP and the controller.
10-15-2008 01:36 PM
Agreed. Where are the trouble APs located? Are they located across a fiber link, or at a remote location/offsite?
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