Wi-Fi Key Management Service and Roaming

The Key Management Service (KMS) is designed with the specific purpose of facilitating seamless wireless user roaming and enhancing network performance. The KMS's primary function is to distribute critical information, including the Pairwise Master Key (PMK) or 802.11r R1 key, among neighboring APs. This exchange enables fast roaming, ensuring a smooth and uninterrupted user experience within a wireless network. The KMS serves as a conduit for disseminating crucial user-related data. This includes details such as VLAN assignments, user role information, and, when machine authentication is in use, the authentication state of the user's device. These data elements collectively form a comprehensive station record for each user, which plays a pivotal role in the roaming process.