Here is an overview of what happens when you enable Fastlane on a WLAN. This ensures that CAPWAP tunnels packets between the AP and controller are marked with the appropriate DSCP values across the wired portion of the network.įastlane configuration is focused on tuning QoS settings for a WLAN, but there are also changes to the entire wireless network. In addition, the APs and upstream WLC will preserve any inner DSCP markings on IP packets from iOS devices. Fastlane is basically a hack that allows iOS devices to access the Voice AC in a non-standard way. If you have worked on Cisco wireless networks that support phones like the 7925 or 8821, you may be familiar with TSPEC, which is a method that wireless devices use to reserve bandwidth when accessing the Voice AC on a network where Admission Control Mandatory (a.k.a CAC) is enabled. The main idea of Fastlane is to allow certain apps on an iOS device to send traffic with Voice Access Category (AC) on a network with Call Admission Control without having to use TSPEC. This partnership came about because of the increase in the use of mission-critical applications like Jabber and Citrix on iOS 10 devices. It is part of a suite of features that resulted from the Cisco and Apple partnership that includes Adaptive 802.11r, and robust 11k/v support on iOS devices. Introduced with 8.3 firmware, Fastlane is a set of configuration changes that tune the wireless network for iOS 10 devices. If you run a Cisco wireless network, chances are you have heard about Fastlane for iOS.
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