Segment Routing over MPLS is a scalable and flexible transport technology for IP networks. By not needing traditional label distribution protocols and relying on source-based forwarding with segment identifiers, SR-MPLS enables operators to steer traffic deterministically while keeping the operational model simple. SR-MPLS can be deployed on existing MPLS-capable hardware, which makes it a practical choice for operators planning incremental upgrades.
This year’s interoperability event built on previous SR-MPLS test cycles and focused on operational robustness, control plane extensions, and failure handling in mixed IPv4 and IPv6 environments. The tests covered traffic steering, fast reroute mechanisms, control plane scalability, and operational tooling such as ping and traceroute.
The goal of the event was to validate that SR-MPLS features work consistently across vendors and that advanced use cases can be deployed without compromising interoperability or service stability.

The following test cases have been executed for this test area: