Can WLC be upgraded from 184.108.40.206 directly to 220.127.116.11?
I have read some release notes and Configuration guide but they all didn't tell me the detail. Actually I want to know can I directly upgrade the WLC from old 3.2 version to the newest 4.0 version? And will the existing configuration be kept after the upgrade? Anyone can help me? Thanks!
Re: Can WLC be upgraded from 18.104.22.168 directly to 22.214.171.124?
Yes you can. However, there are many configurations that may not be held through the upgrade process due to structure changes. We have also seen many issues with corrupt configs. If you decide to do this we HIGHLY recommend defaulting the config and reconfiguring the box. I will save you much headache in the future!
In the case of the WCS, you are forced to perform an uninstall of 3.2 software and an install from scratch of 4.0. We did the upgrade prior to performing any configuration in 3.2 and so did not attempt to carry forward the config. But you will have some "fun" bringing any AP licensing forward.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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