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According to the Aruba Documentation Portal 1 , the ArubaOS-CX switch supports various features to control the ingress traffic on specific ports, such as rate limiting, QoS shaping, and access control. These features can help reduce the impact of excessive broadcast traffic on the network performance and availability.

This is because rate limiting is a feature that allows you to limit the inbound or outbound traffic on a port based on a percentage of the port capacity or a fixed amount of bytes per second.  Rate limiting can help prevent broadcast storms by reducing the amount of broadcast packets that enter or leave a port

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PAPI is the protocol that is used to establish tunnels between the CX switch and the Aruba Gateway for Dynamic Segmentation 1 .  By default, PAPI uses a simple checksum to verify the integrity of the messages, but it does not encrypt the payload 2 . This could expose the network to spoofing or replay attacks by malicious actors.  To address this situation, the administrator must enable Enhanced PAPI security, which uses AES-256 encryption and HMAC-SHA1 authentication to protect the tunnel traffic 2 .  Enhanced PAPI security can be enabled on the CX switch by using the command  system papi enhanced-security enable 3 . This will ensure that the tunnels built between the CX switch and the Aruba Gateway are encrypted and authenticated.

The reason is that AOS 10.x does not support clustering gateways with different versions in the same cluster profile. A cluster profile defines the configuration settings for a group of gateways that are managed by Aruba Central.

According to the Aruba documentation 2 , “You can combine 7200 Series and 7000 Series gateways in the same cluster with a maximum size of four devices with reduced AP client capacity on 7000 Series gateways.”