and Control (AVC) classifies applications using deep packet inspection
techniques with the Network-Based Application Recognition
(NBAR) engine, and provides application-level visibility
and control into Wi-Fi networks. After the applications are recognized, the AVC
feature enables you to either drop or mark the data traffic.
Using AVC, we can
detect more than 1000 applications. AVC enables you to perform real-time
analysis and create policies to reduce network congestion, costly network link
usage, and infrastructure upgrades.
You can view list of 30 applications in Top Applications in Monitor Summary section of the UI.
AVC is supported on the
following controller platforms: Cisco 2500 Series Wireless LAN Controllers,
Cisco 5500 Series Wireless LAN Controllers, Cisco Flex 7500 Series Wireless LAN
Controllers in central switching mode, Cisco 8500 Series Wireless LAN
Controllers, and Cisco Wireless Services Module 2 (WiSM2).
AVC DSCP marks only the DSCP of the original packet in the controller in
both directions (upstream and downstream). It does not affect the outer CAPWAP
DCSP. AVC DSCP is applicable only when the application is classified. For
example, based on the AVC profile configuration, if an application is
classified as ftp or http, the corresponding DSCP marking is applied
irrespective of the WLAN QoS. For downstream, the DSCP value of outer CAPWAP
header and inner packet’s DSCP are taken from AVC DSCP. WLAN QoS is only
applicable for all traffic from WLC to AP through CAPWAP. It does not change
the DSCP of the original packet