Initial AP registration on a 8510 WLC HA-SKU and N+1 deployment

Question

Hi,
We have several 8510 controllers and one of them needs to be configured as HA SKU for N+1 deployment. I am testing the scenario with two controllers right now, so I have the primary and the secondary controller configured as part of the same Mobility Group and they appear UP. Please, see the rest of the configuration below.
When I power off the Primary controller, the APs don’t register to the HA SKU controller (secondary). These two controllers are in different parts of the network but they are members of the same mobility group.
Do I need to specify the HA SKU controller in the DHCP scope for the APs? I am not sure what I am missing....
Do you have any suggestions?
Thank you.
Primary Controller:
(Cisco Controller) >show redundancy summary
 Redundancy Mode = SSO DISABLED
     Local State = ACTIVE
      Peer State = N/A
            Unit = Primary
         Unit ID = XX:XX:XX:XX:XX:XX
Redundancy State = N/A
    Mobility MAC = XX:XX:XX:XX:XX:XX
Redundancy Management IP Address................. 0.0.0.0
Peer Redundancy Management IP Address............ 0.0.0.0
Redundancy Port IP Address....................... 0.0.0.0
Peer Redundancy Port IP Address.................. 169.254.0.0
Wireless --> Access Points -->  Global Configuration:
(Cisco Controller) >show redundancy summary
 Redundancy Mode = SSO DISABLED
     Local State = ACTIVE
      Peer State = N/A
            Unit = Secondary - HA SKU
         Unit ID = XX:XX:XX:XX:XX:XX
Redundancy State = N/A
    Mobility MAC = XX:XX:XX:XX:XX:XX
Redundancy Management IP Address................. 0.0.0.0
Peer Redundancy Management IP Address............ 0.0.0.0
Redundancy Port IP Address....................... 0.0.0.0
Peer Redundancy Port IP Address.................. 169.254.0.0
Controller--> General:

Answer 1

Hi Scott,
Yes, it is N+1 HA with HA-SKU what I need to implement.
“6000 Access Points Supported” is shown in the main GUI page.
I followed the guide you mentioned to do this configuration:
1 - From the primary controller, configure the backup controller on the primary to point to the secondary controller:
(Cisco Controller) >config advanced backup-controller primary Secondary 10.9.51.252
(Cisco Controller) >show advanced backup-controller
AP primary Backup Controller .................... Secondary 10.9.51.252
AP secondary Backup Controller ..................  0.0.0.0
2 - On the permanent AP count WLC, use the config redundancy unit secondary command to convert the controller into an HA-SKU secondary controller:
(Cisco Controller) >config redundancy unit secondary
(Cisco Controller) >
3- On the CLI, use the show redundancy summary command to view the status of the primary and secondary controllers:
Primary:
(Cisco Controller) >show redundancy summary
 Redundancy Mode = SSO DISABLED
     Local State = ACTIVE
      Peer State = N/A
            Unit = Primary
         Unit ID = F8:72:EA:66:B8:A0
Redundancy State = N/A
    Mobility MAC = F8:72:EA:66:B8:A0
Redundancy Management IP Address................. 0.0.0.0
Peer Redundancy Management IP Address............ 0.0.0.0
Redundancy Port IP Address....................... 0.0.0.0
Peer Redundancy Port IP Address.................. 169.254.0.0
Secondary:
(Cisco Controller) >show redundancy summary
 Redundancy Mode = SSO DISABLED
     Local State = ACTIVE
      Peer State = N/A
            Unit = Secondary - HA SKU
         Unit ID = F8:72:EA:66:E4:40
Redundancy State = N/A
    Mobility MAC = F8:72:EA:66:E4:40
Redundancy Management IP Address................. 0.0.0.0
Peer Redundancy Management IP Address............ 0.0.0.0
Redundancy Port IP Address....................... 0.0.0.0
Peer Redundancy Port IP Address.................. 169.254.0.0
As far as I can tell I have completed all the steps. In my configuration, “Redundancy Management IP Address” and “Peer Redundancy Management IP Address” are 0.0.0.0; these are the only differences I can find with the configuration in the Guide.
Redundancy Management IP Address................. 0.0.0.0
Peer Redundancy Management IP Address............ 0.0.0.0
Thank you.
Joana.