Cisco 5520 Wireless Controller vs Cisco Aironet 1800 Series Access Points

• Promotes and expands mobility.
• Portal with authentication for guests and collaborators.
• Enables roaming
• Automatically controls all access points in our network.

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• Until 2018, our Aironets were 1560 series, and each was managed separately. We had about 9 devices, 3-4 per floor, strategically placed on each floor to get a good coverage map over a three-floor environment. Their coverage was greater than expected. With the latest 1852 models we have, they are managed by a controller, and frankly, the coverage is a smaller area, requiring more units. We have worked with support for months and this is the final outcome of all the setting changes - we simply need more devices to cover the same area.
• None of the models I have used have needed reboots. We usually only reboot the devices annually, and they don't have issues requiring restarts.
• With the 1560 series, the connection strength was extremely consistent. With the new 1852 model, which is managed by one of the WAPs as a controller, it is supposed to use smart technology to load balance (optional) and determine which of the WAPs is appropriate to connect the requesting device to - great idea - but it does NOT work well.

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• We have had some issues with access points losing their configurations and going offline. This is not a common issue and we are not entirely certain if it is a fault of the controller or the individual APs. That said, the controller does not appear to retain the knowledge of the offline AP which can be a management headache.

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• On the Mobility Express models, it’s hard to configure all from the GUI, and sometimes the GUI is buggy
• In Mobility Express, the (virtual) controller is not able to push the right image to the APs. This sometimes results in not joining the APs
• Some minor issues with firmware

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• The 5520 WLC makes the management and configuration of large groups of AP's very easy which has a positive effect on operational costs.
• Devices are extremely reliable.

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• We can be in Mobility Express mode where the AP provides the controller functionality to support a small to medium deployment without requiring a dedicated controller.
• Access Points are centrally managed via a WLC reducing the management overhead for deployment, configuration, and upgrade.

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