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Recovering a hung 2504 wlc

Dear Experts,

 

 

 

 

I have an 2500 WLC, which some how got hung and is not responding. Recently I have upgraded the code on it to 8.0.100.0 followed by FUS upgrade to the latest available one: 1.9.

 

It was all fine for a week, however suddenly I see:

 

1)WLC as hung with no response from console

 

2)LEDs viz: SYS & ALM consistently shown as amber.

 

Troubleshooting steps tried:

1)Hard rebooting the units few a times.

2)Changed the power inlets.

3)Hard reset.

       Also the server room temperature is kept well under prescribed temperatures.

 

From doc, it is not pretty sure what exactly the combination of ALM & SYS as amber means.

 

Please share if someone has faced the similar issues and the probable solution.

 

Below is the excerpt from Doc:

 

 

http://www.cisco.com/c/en/us/td/docs/wireless/controller/2500/quick/guide/ctr2504_q_s.html#wp39063

 

LED description:

 

SYS

System LED

The system LED determines if the system is powered up.

LED description:

Blinking Amber—Boot-loader is active and waiting for user input from the system console.

Blinking Green—Boot-loader or booting.

Green—Normal System Operation.

Amber—System failed the bootup process or an error caused the system to halt. A status or error message is posted on the console screen.

Off—System not receiving power.

ALM

Alarm LED

The alarm LED determines a status or error occurred. The status or error is posted on the console screen.

LED description:

Blinking Green—Controller image upgrading.

Amber—Controller status activity, such as firmware upgrade.

Blinking Amber—Controller error. For example, a temperature error exists.

1 Accepted Solution

Accepted Solutions

Leo Laohoo
Hall of Fame
Hall of Fame

contact TAC.  You may need to RMA the appliance.

View solution in original post

2 Replies 2

Leo Laohoo
Hall of Fame
Hall of Fame

contact TAC.  You may need to RMA the appliance.

Thanks Leo

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