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Cisco 4402 WLC connectivity issue

jacobjece
Level 1
Level 1

Hi i have an issue with cisco 4402 WLC. It is totally down with red light flashing in all AP's. Then it works fine after several reboot. This issue happen thrice in past 2 weeks. Can anyone advice what the issue might be plz?

3 Replies 3

Scott Fella
Hall of Fame
Hall of Fame

You don't have enough information for is to help. You have to know if its just a single ap, all AP's, the WLC going down, network connectivity issue. AP's that can't find the WLC will blink red or multiple colors. That is normal and might be a network issue.

Sent from Cisco Technical Support iPhone App

-Scott
*** Please rate helpful posts ***

Hi, my actual issue is the Cisco 4402 WLC freezes some time and all AP's going down. Two connection in the fornt of WLC, one to core switch showing link and activity LEDs, the other is to the DMZ switch and the activity LED is  not flashing. We checked and found that network is fine and the connection to the router is also fine. Recently updated the software with 7.0.240.0. Not sure whether it might be a hardware issue. If so how wil i be able to diagnoise???

Plz find the below Crash Report:

************************************************************

*             Start Cisco Crash Handler                *

************************************************************

Sys Name:           EUIR-FER-PLT1-WLC01

Model:              AIR-WLC4402-12-K9

Version:            7.0.240.0

Timestamp:          Mon Aug 12 08:21:05 2013

SystemUpTime:           0 days 0 hrs 15 mins 11 secs

pid:                919

TID:                376856

Task Name:          NPUCheckTask

User Crash:           The system has encountered a fatal condition at mmc_system.c:2219

------------------------------------------------------------

Analysis of Failure:

  Software was stopped for the following reason:

     The system has encountered a fatal condition at mmc_system.c:2219

Abhishek Abhishek
Cisco Employee
Cisco Employee

Hello,

As per your query i can suggest you the following solution-

Solid red indicates an under voltage condition detected on one of the DC/DC converters. Off indicates normal operation. This LED behavior may also be defined by the controller software.

Solid white indicates normal operation. Solid red indicates a fault.

Hope this will help you

Hello,

As per your query i can suggest you the following solution-

Solid red indicates an under voltage condition detected on one of the DC/DC converters. Off indicates normal operation. This LED behavior may also be defined by the controller software.

Solid white indicates normal operation. Solid red indicates a fault.

Hope this will help you.

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