Cisco WLC upgrate from code 7.4.121.0 to 8-0-120-0.

[muhamed.shafi]

Hi, 

I have a Cisco 5508 WLAN Controller which is running code 7.4.121.0. I am planning to upgrade it to 8.0.120.0. 

I have tried to back up the configuration through GUI and it was getting failed. It says the request timed out towards the tftp server. I am using tftp32 software. 

Please let me is there any prerequisites I need to follow before doing the upgrade. 

I am looking some suggestions about this upgrade. 

Thanks 

[Rasika Nayanajith]

Try CLI method & see. If that fails, then there is some connectivity/port issue between your WLC & TFTP.

Regarding the upgrade I would go through the release notes carefully.

http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn80mr2.html

Also I would upgrade FUS image to 1.9.0.0 as well. This will take 30-45 min downtime and suggest to do it via CLI as well. 

http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus_rn_OL-31390-01.html

Get enough downtime for both upgrades (at least 1 hour outage)

HTH

Rasika

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[Leo Laohoo]

What is the exact error message? 

What is the complete output to the command "transfer upload start"?

[yusuf habibi]

hey buddy,

first try to ping from WLC to your TFTP server. if RTO, disable your firewall windows on your machine (PC/Laptop)