11-08-2016 01:32 PM - edited 07-05-2021 06:06 AM
Hello,
Today I have two WLC 5508 (with license for 100 AP each of them), on a single site.
The WLC are operating in high availability (active-standby).
However we have a new scenario, with 02 sites: A and B (attachment).
I would like to know if it is possible to work as follows:
The WLC-A as the main controller of site A. WLC-B as a backup (secondary controller) of WLC-A.
The WLC-B as the main controller of site B. WLC-A as a backup (secondary controller) of WLC-B.
For example:
If WLC-A falls, Site-A Access Points are managed by site B's WLC-B, and vice-versa.
Is that possible?
How can I configure the new scenario? Remember, there will be a site-to-site between Site A and Site B.
Another point:
If I add more 50 APs on Site A. How does the license issue work?
Will I need to buy license for both WLC?
Tks,
11-09-2016 02:10 AM
>....
>...is that possible ?
No , high availability in controller-terms is meant to be what is says, the backup controller can only be in 'full'-stby and can not play any other roles.
M.
11-09-2016 02:53 AM
Ok M.
I understood. So I have two options:
first: I buy more two WLC and I built a distinct WLAN for Site B.
Second: I centralize the WLC cluster and I working with FlexConnect
Is my reasoning correct?
11-09-2016 04:21 AM
I would go with option 1) , I have not used FlexConnect myself but here are things to consider
- In FlexConnect mode the user-data goes directly on to the network from the AP, this means easier access to the network from wireless devices (for instance). Wireless is by definition a far more easy path to the network, then a network socket at your desk. Flexconnect may make it more difficult to isolate and identify 'bad sources' on the (wirless) and to the-end on the global network. So for IntrAnets with a high security requirements there is a possible security penalty. If you use the setup to bind 2 sites together; then the security penalty may be doubled....
M.
11-10-2016 11:58 PM
You will have to break the HA and use controllers as N +1 and have one site point to controller A as primary and controller B as secondary and the opposite for site 2.
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