are synchronized to the backup controller. Since the AP whitelist may change periodically, the network administrator should regularly synchronize these settings to the backup controller. For details, see "Configuring Networks with a Backup Master Controller" on page 90.

When you install a new backup cluster member, you must add it as a lower priority controller than the existing primary controller. After you install the backup cluster member on the network, resynchronize the database from the existing primary controller to the new backup controller to ensure that all certificates, keys and whitelist entries required for control plane security are added to the new backup controller configuration. If you want the new controller to act as the primary controller, you can increase that controller’s priority after the settings have been resynchronized.

Replacing a Cluster Root Controller with no Backup Controller

If you replace a cluster root controller that does not have a backup controller, the new cluster root controller creates its own self-signed certificate. You then need to reboot each controller in the hierarchy in a specific order to certify all APs with that new certificate.

1.Remove the old cluster root from the network.

2.Install and configure the new cluster root.

3.Connect the new cluster root to the network so it can access cluster masters and local Dell controllers.

4.If necessary, reconfigure the cluster masters and local Dell controllers with their new cluster root IP and master IP addresses.

5.Reboot every cluster member controller. The cluster member begins using a new certificate signed by the cluster root.

6.Reboot every local controller. Each local controllerbegins using a new certificate signed by the cluster member.

7.Because the cluster root is new, it does not have a configured campus AP whitelist. Access the campus AP whitelist on any local controller or cluster master and change all APs in a “certified” state to an “approved” state. The APs get recertified, reboot and create new IPsec tunnels to their controller using the new certificate key.

If a cluster root controller does not have any cluster master or local Dell controllers, you must recreate the campus AP whitelist on the cluster root by turning on automatic certificate provisioning or manually reentering the campus AP whitelist entries.

Replacing a Redundant Cluster Root Controller

Dell recommends using a backup controller with your cluster root controller. If your cluster root has a backup controller, you can replace the backup cluster root without having to reboot all cluster master and local Dell controllers, minimizing network disruptions.

The control plane security feature requires you to synchronize databases from the primary controller to the backup controller at least once after the network is up at running. This ensures that all certificates, keys and whitelist entries are synchronized to the backup controller. Since the AP whitelist may change periodically, the network administrator should regularly synchronize these settings to the backup controller. For details, see "Configuring Networks with a Backup Master Controller" on page 90.

When you install a new backup cluster root, you must add it as a lower priority controller than the existing primary controller. After you install the backup cluster root on the network, resynchronize the database from the existing primary controller to the new backup controller to ensure that all certificates, keys and whitelist entries required for control plane security are added to the new backup controller configuration. If you want the new controller to act as the primary controller, you can increase that controller’s priority after the settings have been resynchronized.

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6.2 specifications

Dell 6.2 is an advanced enterprise solution that caters to the needs of businesses seeking robust performance and efficiency. As a part of Dell's commitment to innovation, the 6.2 series combines cutting-edge technologies and features that enhance productivity and deliver reliable computing experiences.

One of the standout features of the Dell 6.2 is its impressive processing power. Equipped with the latest Intel processors, it offers exceptional speed and multitasking capabilities. This allows businesses to run demanding applications effortlessly, making it ideal for data-intensive tasks such as data analysis, software development, and virtualization. The series also supports substantial RAM configurations, enabling users to manage extensive workloads without experiencing slowdowns.

In terms of storage, the Dell 6.2 line includes advanced SSD options that significantly boost data access speeds compared to traditional hard drives. This rapid access to information is vital for businesses that require quick retrieval of large datasets. Furthermore, the devices support RAID configurations, which enhances data redundancy and security, protecting critical business information from loss.

Connectivity is another critical aspect of the Dell 6.2 series. It includes multiple USB ports, HDMI outputs, and high-speed Ethernet options, ensuring that users can easily connect to various peripherals and networks. The integration of Wi-Fi 6 technology enables faster wireless connections, resulting in improved internet speeds and bandwidth efficiency, which is crucial in today’s increasingly connected workplaces.

Dell has also prioritized security in the 6.2 series. It features enhanced biometric authentication and advanced encryption methods, safeguarding sensitive data from unauthorized access. Additionally, the system's BIOS protection and automatic updates provide an added layer of security, ensuring that the device remains safe from emerging threats.

The design of the Dell 6.2 is not only sleek and modern but also built for durability. Its robust chassis is engineered to withstand the rigors of daily use, making it suitable for various business environments. This durability ensures that the investment in Dell 6.2 will last for years while maintaining performance integrity.

In summary, the Dell 6.2 series embodies a blend of speed, storage efficiency, connectivity, and security, making it a top choice for enterprises looking to enhance their computing capabilities. With its modern features and durable design, Dell 6.2 is positioned as a reliable partner in driving business success.
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