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Remote 5508 Standby Controller HA-SKU

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Mar 3rd, 2014
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How does the standby HA-SKU controller that is located remotely miles away maintains it's heartbeat while serving as backup to multiple sites.


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Overall Rating: 5 (4 ratings)
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George Stefanick Mon, 03/03/2014 - 14:50
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Hi Michael,


There are different deployments of HA with the HA-SKU.


1) You have AP-SSO/Client-SSO this is where the controllers are 1 - 1 sync and not 1 to multiple.

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



2) You have HA N+1 backup. This is where the WLC turned into HA converts to MAX licenses and acts like a fullly licensed controller. You can back up 1 to many in this design.

http://www.cisco.com/c/en/us/td/docs/wireless/technology/hi_avail/N1_High_Availability_Deployment_Guide/N1_HA_Overview.html


Hope this helps





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Scott Fella Mon, 03/03/2014 - 15:21
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Just to add... You don't want to do AP SSO over layer 3 unless you are spanning your subnets. What you need to do is N+1 which is what George also posted. There is no heartbeat between the two with N+1 like in AP SSO.

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George Stefanick Mon, 03/03/2014 - 16:17
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I just deployed 5 hospitals with N+1 and it works well ..



__________________________________________________________________________________________
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
__________________________________________________________________________________________
‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."
__________________________________________________
"Im like bacon, I make your wireless better"

Scott Fella Mon, 03/03/2014 - 16:43
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Agreed.... it does work well.... compared to AP SSO:)


Sorry Leo... hehe


Thanks,

Scott

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Michael Shelton Tue, 03/04/2014 - 18:00
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Thanks Guys I appreciate the information


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