Abstract
This disclosure relates to enhancements in Service Activation Test (SAT) methodologies for Ethernet VPN (EVPN) networks employing multi-homing with all-active redundancy. Conventional SAT methods, such as those defined in RFC 2544 and ITU-T Y.1564, assume symmetric traffic paths and do not account for Equal-Cost Multi-Path (ECMP) forwarding behavior in EVPN VPLS, VPWS, or FXC deployments. As a result, test frames may traverse non-deterministic paths, causing inaccurate or incomplete service-level measurements. The disclosed solution introduces a uni-directional SAT framework that computes throughput, latency, jitter, and frame-loss on forward paths only, avoiding reliance on reverse traffic. The approach utilizes three functional elements: a Generator to inject SAT frames, a Collector to receive and compute statistics, and a Network Controller to coordinate tests, collect results, and adapt transmission rates to achieve no-drop throughput. In single-home to multi-home scenarios, a single session can exercise all ECMP paths simultaneously, while in multi-home to single-home scenarios, deterministic one-way testing eliminates inaccuracies. For point-to-multipoint services, a common SAT MAC can be applied across multiple nodes. This approach provides accurate SLA verification, improves operational efficiency, extends existing benchmarking methodologies, and supports scalable automation in EVPN networks with complex multi-homing topologies.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Anonymous, "Service Activation Test Solution over EVPN Multi Homed Networks", Technical Disclosure Commons, (September 09, 2025)
https://www.tdcommons.org/dpubs_series/8571