Explains how external AppQoE service nodes extend AppQoE services beyond an intercepting edge router and describes supported traffic and solution components.
An external AppQoE service node is a supported device configured to provide AppQoE services separately from an intercepting edge router or service controller.
The support for configuring multiple, external Application Quality of Experience (AppQoE) service nodes provides high availability for TCP and DRE optimization. When AppQoE service nodes are external to the edge router acting as the service controller, the dependency on this intercepting router is reduced. Prior to the release of this feature, AppQoE service instances had to be configured on the service controller itself. You can now configure supported devices with the AppQoE service node role to optimize traffic based on sites and applications. This solution addresses the requirement of larger enterprises to have higher throughput and more number of connections.
The maximum Application Optimization Interconnect Manager (AOIM) peers supported is 255. The MAX number of peers that DRE nodes can connect to is 255.
IPv6 Support for AppQoE Services
From Cisco IOS XE Catalyst SD-WAN Release 17.14.1a and Cisco Catalyst SD-WAN Manager Release 20.14.1, any AppQoE cluster (integrated-service-node, external-service-node, and hybrid-service-node) supports IPv6 traffic.
Components of AppQoE Solution with External Service Nodes
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AppQoE Cluster: An AppQoE controller and a group of AppQoE service nodes at a site.
Typically, data centers or regional data center sites, which require higher aggregated throughput, have an AppQoE cluster with external service nodes for TCP and DRE optimization.
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AppQoE Controller: A supported Cisco IOS XE Catalyst SD-WAN device that intercepts network traffic. Based on the AppQoE policy, the device distributes that traffic to one or more AppQoE service nodes.
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AppQoE Service Nodes: Devices that are configured as AppQoE service nodes are TCP optimization instances that optimize and accelerate traffic. The optimization is based on the configuration in control policies.
From Cisco IOS XE Catalyst SD-WAN Release 17.5.1a, the service nodes can also run the DRE feature to eliminate data redundancy and reduce bandwidth usage. For more information, see Traffic Optimization with DRE .