for 5508 controller AP sso

[syed baseeruddin]

Hi

in our project they are two wireless controller of 5508

we have  to configure  AP sso for two wlc

the licenses we have purchased for only for one controller

the details as shown as below

Cisco	AIR-CT5508-500-K9	Cisco 5508 Series Wireless Controller for up to 500 APs
Cisco	CON-SNT-CT08500	SNTC-8X5XNBD Cisco 5508 Series
Cisco	LIC-CT5508-BASE	Base Software License
Cisco	LIC-CT5508-500	500 AP Base license
Cisco	SWC5500K9-80	Cisco Unified Wireless Controller SW Release 8.0
Cisco	AIR-PWR-CORD-UK	AIR Line Cord United Kingdom
Cisco	AIR-PWR-5500-AC	Cisco 5500 Series Wireless Controller Redundant Power Supply
Cisco	AIR-CT5508-HA-K9	Cisco 5508 Series Wireless Controller for High Availability
Cisco	CON-SNT-CT5508HA	1YR, SNTC 8X5XNBD Cisco 5508 Series Wi

my question in fail over for wlc reduancy we will assign for each AP in high Availabilty the primary and secondary ip address

in APSSO how does fail over work

in each AP how to assign primary and secondary ip address for each APs in APSSO

and the licences are purchased for only one controller

experts please advice the working of these topology of APSSO for two controller

[Scott Fella · Accepted solution]

Syed,

With SSO, you initially have to have an ip for both controllers.  Then when you setup SSO, the HA controller will be the backup of the primary.  License is only required on the non-HA sku controller.  Failover will automatically happen without a glitch to the AP's or end users.  

If you went with N+1 and not use SSO, then you need an ip for each controller and each controller needs to be configured.  There are many deployments of N+1 out there, but SSO is getting popular due to the fast failover.  The only issue is if SSO gets corrupt then both are down and that's the benefit of N+1.

Your list is fine for either.

-Scott 

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[Scott Fella · Accepted solution]

Here is a good doc that explains the design

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

-Scott 

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