08-10-2017 05:26 AM - edited 07-05-2021 07:31 AM
We are proposing the new Cisco 3504 Wireless LAN Controller for a project but the datasheet is not entirely clear on the HA options.
Thank you...
Simon
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08-21-2017 05:45 PM
Hi Simon,
Correct, the 3504 WLC supports high availability, this means Client SSO + AP SSO. It also supports N+1 High Availability.
It's basically what we are used to in other WLCs, like the 5508 or 5520, one becomes the Active and the other becomes the Hot Standby, synchronization occurs through the Redundancy Port.
Don't worry about licensing, these controllers support SmartLicensing or RTU licensing, ask your cisco reseller to provide a BOM for high availability controllers.
For refernce, here's the deployment guide, High Availability has its own section.
08-10-2017 03:33 PM
This is not a lot of people who've purchased this, yet. I recommend contacting your nearest Cisco AM/SE and they should be able to assist.
08-21-2017 05:45 PM
Hi Simon,
Correct, the 3504 WLC supports high availability, this means Client SSO + AP SSO. It also supports N+1 High Availability.
It's basically what we are used to in other WLCs, like the 5508 or 5520, one becomes the Active and the other becomes the Hot Standby, synchronization occurs through the Redundancy Port.
Don't worry about licensing, these controllers support SmartLicensing or RTU licensing, ask your cisco reseller to provide a BOM for high availability controllers.
For refernce, here's the deployment guide, High Availability has its own section.
08-22-2017 11:44 AM
Hi Biaacer2
Thanks a lot for the response. If I understand your response correctly, combined with some of the licensing FAQs, this means we only need to buy the licenses (RTU) for the primary controller, and the secondary will synchronize the license count from the primary?
Regards
Simon
08-22-2017 12:19 PM
Correct, Right To Use is there by default.
Which means that you can add as many licenses as you have purchased for this controller in a "honor code system".
For the Secondary Unit, you need to enable "HA SKU secondary unit"
Under Controller -> General -> HA SKU secondary unit.
That's basically all :)
08-22-2017 12:28 PM
11-02-2017 03:04 AM
11-08-2017 07:17 AM
Arsalan,
As i know, just 150 AP licences...
That is because when the primary WLC fails, the HA unit support all APs registered in the primary.
Regards,
11-08-2017 07:56 AM
Thanks mate for your response. Appreciate your help.
05-08-2018 10:33 AM
As per my mail communication with Global Virtual Engineering team, we need to have valid license in both the WLC.
Regards,
Neelesh
05-14-2018 07:56 AM - edited 05-14-2018 07:57 AM
Hi Neelash
That's actually incorrect. I had the same question when I originally created this thread as it was a new product line.
If you are creating a SSO cluster, the RTU licenses only need to be activated on the primary unit. So you only need to purchase licenses once.
That's the way I proposed it for this project and how it was ultimately installed (without issue).
Hope this helps
Simon
05-14-2018 11:27 AM
Hi, thanks for your reply, to be more specific, when primary goes down, the secondary becomes master and licenses will be transferred to this new Master. when the failed primary been replaced/restored it remails as secondary. Right?
05-14-2018 05:24 AM
i'm a newbie. my client has a 3504 wlc, and they want to set it in HA mode with a virtual WLC. is this setup possible, if yes what are the license requirements?
Thanks for your help
05-14-2018 06:04 AM
05-09-2019 05:44 PM
1) 2 x Controllers in Active / Standby With this setup you will have two controllers running in an Active / Standby configuration. They will share the same IP and configuration. They can be located in the same location or at two geographically separate locations (if you can provide L2 connectivity between both controllers) All AP's register to a single IP address and if the primary controller fails the APs will not experience any downtime as they will instantly move to the standby controller.
2) Redundant Controllers In this setup you have a primary controller in one location and a second controller in another location. APs will register to the primary controller and also be configured to have the second controller as a backup. In the event of a failure of the primary controller the AP's will have to re-associate to the secondary controller which could be up to 120 seconds and will result in downtime for clients.
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