05-24-2022 03:27 AM
can I have HA Between C9800-L-F & C9800-L-C ?
05-24-2022 03:34 AM - edited 05-24-2022 03:37 AM
Hi
The restriction for HA are those below. As in your case, both are physical WLC, you need to worry about this two requirements:
Prior to enabling HA between two 9800 WLCs ensure these you perform these validations:
05-24-2022 05:47 AM
haven’t tried it first hand myself but I Don’t think so you can do HA between the two, look at page 6 of the deployment guide, it appears you need to have same SKU,
hope this helps
05-24-2022 06:49 AM
HA has 2 flavors in Cisco WLC's world.
1. AP/Client SSO - WMI will be one IP and stateful switchover for all the connected clients and AP's are suported and between switchover time is minimal. - This is not supported if 2 different WLC SKU's used as highlighted by others.
2. N+1 HA - There will be 2 WMI's and AP's needs to primed to learn both WMI IP's. There are lot of prerequisites to minimize the downtime such as match the WLC image/SP, AP's needs to be configured with Primary and Secondary WLC WMI etc. AP/Clients will not have stateful switchover, and when the AP's cleints move between WLC's during switchover there will be slightly higher time compared to SSO and clients have to reauth in new WLC. This method is supported irrespective of the platform used.Cisco Catalyst 9800 Wireless Controller N+1 High Availability White Paper
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