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New Member

WLC Upgrade - FUS Upgrade

Greetings,

I am planning on upgrading our redundant 5508 WLC’s from v.7.3.112.0 to v.7.4.110.0 this weekend. One thing I noticed in the release notes of 7.4 is the guideline to update the Field Upgrade Software to v. 1.7.0.0-FUS.

My question is should this FUS be upgraded before or after I upgrade the WLC to 7.4? On the release notes it does state a FPGA error on the does occur on the 5500 series controllers.

http://www.cisco.com/en/US/docs/wireless/controller/release/notes/fus_rn_1_7_0_0.html#wp45499

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On a Cisco 5500 Series Controller, it is observed that the controller sporadically reboots (due to a defect CSCtr39523) and displays the following FPGA error message:

fpga: Lost heartbeat from Environment controller, system will reboot in 5 seconds!!!

A crash file is not created to debug or troubleshoot the error.
You can resolve this issue by installing the FUS image. Please see Resolved Caveats for more details.

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Thanks,

Robert

Everyone's tags (2)
2 ACCEPTED SOLUTIONS

Accepted Solutions

WLC Upgrade - FUS Upgrade

Honestly, it doesn't really matter the ordr you upgrade in.

Though, I tend to update the FUS before the image.

HTH,
Steve

------------------------------------------------------------------------------------------------
Please remember to rate useful posts, and mark questions as answered

HTH, Steve ------------------------------------------------------------------------------------------------ Please remember to rate useful posts, and mark questions as answered
VIP Purple

WLC Upgrade - FUS Upgrade

Yes, agree with Steve, order does not matter.

One thing keep in mind this FUS upgrade will take 30-40 min & make sure you get enough outage window to do this

HTH

Rasika

3 REPLIES

WLC Upgrade - FUS Upgrade

Honestly, it doesn't really matter the ordr you upgrade in.

Though, I tend to update the FUS before the image.

HTH,
Steve

------------------------------------------------------------------------------------------------
Please remember to rate useful posts, and mark questions as answered

HTH, Steve ------------------------------------------------------------------------------------------------ Please remember to rate useful posts, and mark questions as answered
VIP Purple

WLC Upgrade - FUS Upgrade

Yes, agree with Steve, order does not matter.

One thing keep in mind this FUS upgrade will take 30-40 min & make sure you get enough outage window to do this

HTH

Rasika

New Member

WLC Upgrade - FUS Upgrade

Thanks for your responses. I will do the FUS first then the Controller software.

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