Rebooting 8500 in HA mode

[sainath9890]

Hello Guys

we wanted to reboot 8500 which is in HA mode presently (IOS 8.3.X), can we reboot primary and secondary controller separately to avoid total outage.

What is the risk if we go with separate reboot ? What could be the failover time to secondary controller ?  what precautions should be taken ?

we added AP adder license count to controller recently and cisco doc recommended to reboot.

Thanks

[Leo Laohoo]

As long as both units are running the same firmware, you can boot the primary (and the secondary will take over) using the CLI command "redundancy force".

[sainath9890]

Hi Leo,
Thanks a lot for quick reply,

Is there any documents that tells procedure for rebooting 8500 series controller (HA mode)

[Haydn Andrews]

HA deployment guide:

https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/7-5/High_Availability_DG.html

[Leo Laohoo]

---

@sainath9890 wrote:
Is there any documents that tells procedure for rebooting 8500 series controller (HA mode)

---

You want to reboot both units simultaneously or one by one?

[sainath9890]

Hi Leo,

We want to reboot one by one.

[Leo Laohoo]

The command to reboot the ACTIVE unit is "redundancy force".

IMPORTANT:  Don't forget to enable CIMC.

[sainath9890]

Hi Leo,
Thanks for quick reply

Sorry I dint mention the actual model of controller , our controller is 8510
Does CIMC support in this model ?

[balaji.bandi]

8510 do support CIMC

https://www.cisco.com/c/en/us/td/docs/wireless/controller/8500/install/guide/ctrl8500/ctrl8500main.html

if not configured here is guide for reference :

https://www.cisco.com/c/en/us/support/docs/wireless/5520-wireless-controller/212170-Console-access-to-5520-8540-WLC-via-CIMC.pdf

[sainath9890]

Hi Balaji,
I can't see CIMC in 1st link. Could you brief us what is use of enabling CIMC in 8510 controller ?

[Sathiyanarayanan Ravindran]

Please refer the link for Accesing WLC via CIMC.

CIMC is used to take the console of WLC remotely.

[Leo Laohoo]

Once CIMC is enabled, don't forget to upgrade the firmware FIRST.

[balaji.bandi]

i have pointed already in other post here is URL how to configure.

https://www.cisco.com/c/en/us/support/docs/wireless/5520-wireless-controller/212170-Console-access-to-5520-8540-WLC-via-CIMC.pdf

[balaji.bandi]

Adding to other post, I am in assumption that you have configured AP Primary and Secondary configuration. then as suggested @Leo Laohoo  good to go.