Add AP adder license on 5508 HA pair WLC. Does it require a reboot?

[zhilimailbox]

Add AP adder license on 5508 HA pair WLC. Does it require a reboot? 

Is the reboot only required on the WLC with license files, which currently is standby. 

[Ric Beeching · Accepted solution]

I would it as although you can add licenses to WLCs and they appear without a reboot, if there is an uncontrolled reboot I've seen 5508s lose their license files and they have to be re-applied. 

Cheers,

Ric

[zhilimailbox]

Thanks for the reply. 

What is the best way to reboot a HA pair with minimal down time?

[Ric Beeching]

What kind of HA are you running, HA SSO? 

Ric

[zhilimailbox]

HA SSO, 5508 WLC

[Scott Fella · Accepted solution]

Here is my 2 cents... load the license on the primary and issue: redundancy force switchover.  This will reboot the active, make sure it's your primary unit, and the standby will become active. Then when the other controller comes back up and both are in sync, then do another force failover to make the primary unit as active. 

No downtime.

-Scott 

*** Please rate helpful posts *** 

[thigpen]

Hi Scott,

I saw your post and it makes perfect sense. Have you tried this procedure and had it work without failure? The reason I ask, I have a customer that needs to add licenses to an existing HA 5508 pair with SSO. TAC is saying they need to add the license to the Primary and reboot both Primary and Secondary simultaneously.

Thanks,

Steve

[Scott Fella]

Just want to be clear on this. Only do this when you either load licenses or certificates. Don't do this if your upgrading code or else your controller will go into maintenance mode. 

-Scott 

*** Please rate helpful posts *** 

[zhilimailbox]

You mean upgrading field software / WLC software? For these upgrade, both WLC HA pair have to be reset using reset system command on the active WLC. Is that what you mean?

Thanks,

[cmonks119]

I found this on a search for a similar topic, can you confirm if doing an HA failover/reboot also works for config that requires a reboot, such as 'config network web-auth captive-bypass enable,' without having to reboot both units at the same time? 

Thanks.