Dell W-7030 AOS 6.4.x User Guide - Page 513

radio, as long as the 5 Ghz RSSI is not significantly worse than the 2.4 GHz RSSI, and the AP retains a suitable distribution of clients on each of it's radios. The client match feature is enabled through the AP's ARM profile. Although default client match settings are recommended for most users, advanced client match settings can be configured using rf arm-profile commands in the command-line interface. BSS Transition Management Support The BSS Transition Management Support feature allows Client Match to steer devices using 802.11v BSS transition management standards for continuous wireless connectivity. This feature provides a seamless standards compatible method of device steering in wireless networks, as 802.11v BSS transition management support has become increasingly common in wireless devices. Steering a Client When Client Match attempts to steer the client to a more optimal AP, it sends out an 802.11v BSS transition management request to the 11v capable station and waits for a response. 1. Client Match begins a timeout session for the BSS transition management response or new association request to the desired AP. 2. If the request is rejected or the timeout session expires, Client Match is notified of the failed attempt and reinitiates the steer using the 802.11v BSS transition management request. n If the client steer fails the maximum number of timeout attempts (default: 5), Client Match marks the client as 11v unsupported and falls back to using deauths to steer. n If the client steer fails due to request rejection, Client Match does not mark the client as 11v unsupported and continues to attempt to steer using the 802.11v BSS transition management request. Multi-Media Sync-Up Client Match offers a tighter integration with multiple media-aware ALGs to provide better call quality for programs like Lync and Facetime. With Client Match's ability to understand various media protocols, clients are not steered to different APs in the middle of an active media session. When a client participates in a call, the controller learns about the media session and sends this information to the AP that the client is currently associated to, as part of the variable bitrate (VBR) update. When the AP learns that the client is in a call, it will not attempt to steer the client to another AP until the controller indicates that the call has ended, allowing calls to run more smoothly without any disruptions to the ongoing media flow. Removing VBR Dependency on Probe Requests Client Match has shifted its dependency on probe requests to the AM data feed for virtual beacon report (VBR) data. Instead of relying solely on client background scans during probe requests, which can cause limitations due to low scanning frequency, Client Match uses AM data feeds to gain more continuous, comprehensive client RSSI feeds. Along with probe requests, AM data feeds collect client information during AP scanning using the following frames: l Block ACK l Management frames l NULL data frames l Data frames with rates no higher than 36Mbps l Control frames 513 | Adaptive Radio Management Dell Networking W-Series ArubaOS 6.4.x | User Guide