Adding a secondary WLC with different software version

Hi all

Soon I will deploy a secondary WLC (primary, active) with the version of the 7.4.121.0 software

The environment have a standalone WLC (secondary, hot standby) with the version of the 7.0.240.0 software

I have read the deployment guide "Configuring High Availability" and have this quote: ' we recommend that you do not combine two controllers on controller different versions of software.» If they are matched, then the controller with address of management of lower redundancy becomes the active controller and the other controller goes into maintenance mode. »

I know that the upgrade to secondary WLC can be provide by WLC primary only.

So, how can I do this?

1 - downgrade the WLC secondary to the 7.0.240.0 and the controllers of the pair of two or

2 - controllers to couple the two and to match the two controllers (perhaps with questions)?

And it s necessary in both controllers have the same version of software images (boot primary and secondary boot)?

Thanks for any response.

It is necessary to have the same version of code... because if ap moves one wlc to another, they will have to be upgraded and or downgrade, which can take 5 minutes or more.  This will affect your end users.  The WLC should also be the same model... well its recommended.  But if your current wlc does support the latest code, then your new wlc will have to be downgraded.

Here is a table of compatibility to keep handy:

http://www.Cisco.com/c/en/us/TD/docs/wireless/compatibility/matrix/Compa...

Tags: Cisco Wireless

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