Application Quality of Experience Overview

Application Quality of Experience Overview

AppQoE integrates into Cisco SD-WAN, combining other Cisco IOS XE solutions such as quality of service (QoS), deep packet inspection (DPI), and additional functionalities. By using the existing orchestration or Zero-Touch Provisioning (ZTP) workflow from Cisco vManage and a centralized controller policy, AppQoE streamlines the deployment and management of Cisco SD-WAN networks, enhancing operational efficiency and the user experience.

There are multiple components to AppQoE:

• TCP optimization

• Forward Error Correction (FEC)

• Packet duplication

• Data redundancy elimination (DRE) and compression

TCP optimization employs the BBR2 congestion algorithm to regulate the transmission speed of data across the WAN link. BBR2, an acronym for Bottleneck Bandwidth and Round-trip propagation time, incorporates established TCP enhancements such as window scaling, large initial windows, and selective acknowledgment into its framework.