Question

A company is deploying Cisco Catalyst SD-WAN Cloud OnRamp for SaaS to optimize access to a cloud-hosted collaboration application. The network administrator enables the SaaS application in the OnRamp configuration and assigns two candidate WAN interfaces at each branch: a Direct Internet Access (DIA) circuit and a gateway path through a regional cloud gateway site. After deployment, users at a branch report suboptimal performance even though both paths are up. The administrator confirms Cloud OnRamp for SaaS is enabled but suspects the traffic is not being steered based on real-time application experience. Which mechanism does Cloud OnRamp for SaaS use to determine and continuously steer traffic to the best-performing path for the SaaS application?

Accepted Answer

It sends HTTP probes along each candidate path and steers traffic to the best-performing path those probes measure (reflected in a Viptela Quality of Experience (vQoE) score)

Answer

It relies on BGP local preference values learned from the SaaS provider's autonomous system to select the lowest-cost AS path

Answer

It uses static application-aware routing SLA class thresholds for loss, latency, and jitter measured only at tunnel establishment

Answer

It selects the path with the highest available bandwidth reported by the interface QoS shaper regardless of application loss or latency